Certified Industrial Hygiene Professional (CIHP) -

Certified Industrial Hygiene Professional (CIHP)

Build a clear foundation in protecting workplace health through the recognition and control of occupational hazards. This course supports sound judgement, safer working conditions, and better management of exposure risks.

This course includes:

45.5 hours on-demand video

675 downloadable resources

Full lifetime access with updates

Accrevia Certificate of Completion

What you'll learn

Understand industrial hygiene foundations, ethics, regulations, hazard types, information resources, and the full exposure risk management process.
Explain lung anatomy, breathing, respiratory defenses, particle deposition, pulmonary impairment, and key pulmonary function tests.
Understand skin structure, functions, exposure pathways, occupational dermatoses, diagnosis, compensation, prevention, and control.
Learn ear anatomy, hearing disorders, noise effects, hearing measurement, impairment evaluation, and OSHA hearing conservation requirements.
Understand eye anatomy, visual performance, eye disorders, workplace hazards, first aid, protection standards, and vision conservation.
Apply industrial toxicology, dose-response, exposure limits, biological monitoring, and toxicological evidence to workplace health decisions.
Assess gases, vapors, and solvents through properties, exposure factors, monitoring methods, common hazards, and control measures.
Understand particulate behavior, sampling, metals, silica, asbestos, nanomaterials, biological monitoring, and high-efficiency filtration.
Evaluate industrial noise using sound principles, surveys, audiometry, control programs, and occupational noise exposure standards.
Understand ionizing radiation types, sources, biological effects, monitoring instruments, basic safety factors, and control programs.
Understand nonionizing radiation, EM fields, RF, optical radiation, lasers, lighting hazards, measurement methods, and controls.
Evaluate heat and cold stress, acclimatization, thermal comfort, performance effects, and interactions with other toxic hazards.
Apply ergonomics to work design, biomechanics, manual handling, workstation layout, fatigue, and musculoskeletal risk reduction.
Recognize biological hazards, perform biosafety risk assessment, evaluate compliance, and apply sampling, standards, and controls.
Perform exposure evaluation through walkthroughs, process review, sampling strategy, calculations, statistics, and compliance decisions.
Select air sampling methods, media, pumps, calibration techniques, and recordkeeping practices for gases, vapors, and particulates.
Use direct-reading instruments for gases, vapors, and particulates, and judge calibration, performance, cost, training, and portability.
Apply the hierarchy of controls to design, verify, and improve engineering, administrative, and PPE-based exposure controls.
Understand local exhaust ventilation principles, system components, airflow, pressure relationships, evaluation, and improvement.
Design and assess dilution ventilation systems, airflow calculations, applications, limitations, and performance measurement.
Understand indoor air quality, HVAC systems, ventilation standards, troubleshooting, thermal comfort, and IAQ control strategies.
Select, fit, use, and manage respirators through program administration, fit testing, maintenance, and OSHA requirements.
Manage PPE programs, including selection, fit, training, maintenance, and protection for eyes, face, head, hands, feet, and clothing.
Understand the industrial hygienist’s role, competencies, career paths, professional development, and workplace contribution.
Understand the safety professional’s role in inspections, investigations, training, risk management, and safety systems.
Understand how the occupational and environmental health clinician team supports prevention, surveillance, care, and return to work.
Understand the occupational medicine physician’s history, credentials, practice settings, scope, and preplacement evaluations.
Understand the occupational health nurse’s scope, standards, prevention roles, service models, and outcome evaluation.
Build and manage an industrial hygiene program through policy, assessment, participation, documentation, evaluation, and resources.
Understand integrated EHS programs, shared responsibilities, regulatory drivers, resource models, and people-profit-planet thinking.
Understand employer duties, inspections, health standards, worker rights, and the roles of OSHA, NIOSH, EPA, and state agencies.
Understand GHS, REACH, control banding, hazard communication, and international occupational safety and health systems.
Trace OSHA history from the pre-OSH Act era to recent developments, major transitions, and the agency’s evolving role.

Requirements

Participants should have a basic understanding of workplace operations, safety, or technical environments, proficiency in English, and a strong interest in occupational health, exposure assessment, hazard recognition, monitoring, ventilation, control methods, and protecting workers from chemical, physical, biological, and ergonomic hazards. Prior experience in industrial hygiene is helpful but not essential.

Who this course is for

Course Description

Certified Industrial Hygiene Professional (CIHP) is a structured professional development course for students, early-career practitioners, industrial hygienists, EHS professionals, engineers, occupational health personnel, and workplace leaders who are responsible for protecting people from harmful exposures in working environments. It is designed for learners who want a coherent pathway from foundational understanding to professional practice—moving beyond fragmented knowledge toward a disciplined, workplace-ready approach to industrial hygiene.

In today’s operating environment, industrial hygiene sits at the intersection of worker health, safety, operations, engineering, compliance, and organizational accountability. Employers are expected to recognize health hazards before harm occurs, understand how exposures happen, evaluate risk with defensible methods, apply suitable controls, and maintain records and programs that stand up to audits, inspections, and operational change. This course supports professionals who want to contribute credibly to that responsibility by developing a more systematic and prevention-focused approach to workplace health protection.

Completion of the course reflects an understanding of industrial hygiene as a continuous professional responsibility rather than a narrow technical task. Effective practice requires more than awareness of hazards; it requires judgment, discipline, and the ability to connect exposure concerns with practical action. Learners strengthen their ability to interpret workplace conditions, support monitoring and control decisions, communicate clearly with management and workers, and contribute to decisions that are technically sound, ethically responsible, and credible in practice.

The course places strong emphasis on real-world relevance: how organizations protect people through structured programs, how evidence is used to support control decisions, how technical findings are translated into action, and how workplace health protection is sustained over time through documentation, review, and continual improvement. It also reflects the multidisciplinary nature of industrial hygiene, where health protection depends on coordination across operations, safety, occupational health, engineering, and management rather than isolated effort.

For individual professionals, Certified Industrial Hygiene Professional (CIHP) provides a clear route to strengthen credibility and broaden capability in industrial hygiene, exposure assessment, hazard control, and workplace health decision-making. For organizations, it supports internal capability building, stronger integration across teams, and a more disciplined approach to protecting workers while supporting performance, compliance, and long-term accountability. Whether the goal is to build technical confidence, improve workplace health systems, or support a more mature industrial hygiene culture, Certified Industrial Hygiene Professional (CIHP) offers a clear framework for responsible professional practice.

Course Outline

Module 1 - Overview of Industrial Hygiene

M1L1 – Foundations and Evolution of Industrial Hygiene
A systematic review of foundations and evolution of industrial hygiene starts with historical and current context of occupational hygiene practice. The material includes relationship to occupational health, safety, toxicology, engineering, and public health and expansion from factory hazards to complex modern work environments. It then considers historical background and the present, including new challenges from small enterprises, precarious work, and emerging technologies. Additional focus is placed on the serious problem of underestimation of occupationally related disease, with attention to how long latency, underdiagnosis, and poor exposure histories obscure true burden.

M1L2 – Professional Ethics and the Industrial Hygiene Profession
Explore professional ethics and the industrial hygiene profession through the occupational health and safety team. Key learning areas include ethical communication of uncertainty, limits, and unacceptable risk and roles of industrial hygienists, safety professionals, occupational physicians, and nurses. It then considers the industrial hygiene profession and American Board of Industrial Hygiene (ABIH) / CIH credentialing, including professional bodies, standards work, guidance development, and peer learning.

M1L3 – Industrial Hygiene Program Ethics and Structure
Explore industrial hygiene program ethics and structure through policy statement. The material includes alignment with legal duties, professional ethics, and continual improvement and policy review triggers after incidents, major changes, or audit findings. Attention then turns to hazard recognition procedures, hazard evaluation and exposure assessment, and employee training, with examples including exposure comparison with OELs, action levels, and internal risk criteria. The content also examines employee involvement, program evaluation and audit, and recordkeeping, with emphasis on shared ownership of exposure reduction and safe work practices.

M1L4 – Federal Regulatory Framework for Industrial Hygiene
Gain a focused overview of federal regulatory framework for industrial hygiene, with initial attention to federal regulations and Occupational Safety and Health Act (OSH Act) of 1970. These areas involve the interaction of worker-health duties with environmental and emergency-response law and the relevance of Sections 5, 6, 8, 18, 20, 21, and 22 to industrial hygiene practice. Further coverage addresses General Duty Clause and Occupational Safety and Health Administration (OSHA), particularly importance for emerging hazards, process-specific risks, and mixed exposures. It then considers National Institute for Occupational Safety and Health (NIOSH) and Recommended Exposure Limits (RELs), including contribution to surveillance, exposure science, respirator approval, and prevention research. Additional focus is placed on Mine Safety and Health Administration (MSHA), with attention to relevance for silica, respirable coal mine dust, diesel emissions, noise, and ventilation.

M1L5 – Environmental Chemical Laws Affecting IH Practice
Gain a focused overview of environmental chemical laws affecting IH practice, with initial attention to Toxic Substances Control Act (TSCA) and Resource Conservation and Recovery Act (RCRA). The discussion covers the importance of TSCA evaluations for substitution, purchasing, and hazard review and cradle-to-grave control of hazardous waste generation and management. Further coverage addresses Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), particularly need to coordinate exposure assessment with environmental, legal, and incident-management functions.

M1L6 – Workplace Environmental Factors and Hazard Categories
Analyse workplace environmental factors and hazard categories by starting with environmental factors or stresses and chemical hazards. The discussion covers need to consider routine, non-routine, and emergency conditions and dusts, fumes, fibres, mists, gases, vapours, metals, and sensitising agents. The content also examines physical hazards and ergonomic hazards, with emphasis on the importance of human factors in tool selection, pacing, and layout. Further coverage addresses biological hazards, particularly the need for containment, hygiene, vaccination, and exposure investigation protocols.

M1L7 – Routes of Entry for Harmful Agents
Examine the essential principles of routes of entry for harmful agents, beginning with route of entry and inhalation. The discussion covers why route of entry determines absorbed dose and target-organ risk and the relevance of ventilation, containment, and respiratory protection. Additional focus is placed on absorption and ingestion, with attention to dermal and ocular absorption as major pathways for many chemicals. The remaining discussion addresses injection, including potential for rapid systemic uptake and severe biological or chemical injury.

M1L8 – Airborne Contaminants and Respiratory Hazards
Develop a structured understanding of airborne contaminants and respiratory hazards by examining types of airborne contaminants and states of matter. The content brings together the relevance of mixed atmospheres and process by-products and solids, liquids, and gases as the basis for workplace contaminant behavior. Additional focus is placed on respiratory hazards, with attention to respiratory tract defense mechanisms and their limitations.

M1L9 – Threshold Limit Values and Exposure Standards
Gain a focused overview of threshold limit values and exposure standards, with initial attention to skin notation. Key learning areas include the purpose of occupational exposure limits in health risk evaluation and implications for glove selection, clothing, decontamination, and biomonitoring. Further coverage addresses mixtures and federal occupational safety and health standards, particularly OSHA PELs as enforceable federal limits in covered workplaces.

M1L10 – Hazard Evaluation and Air Sampling Basics
Consider hazard evaluation and air sampling basics by first reviewing basic hazard-recognition procedures. Key learning areas include the purpose of evaluation in deciding whether exposure is acceptable or controlled and identification of similar exposure groups and highest-risk tasks. Attention then turns to information required and degree of hazard, with examples including severity based on toxicity, sensitisation, carcinogenicity, and route of entry. The content also examines air sampling, with emphasis on sample media selection, pump calibration, field blanks, and chain of custody.

M1L11 – Occupational Skin Diseases Overview
Explore occupational skin diseases overview through types. These areas involve high frequency and underreporting of occupational skin disorders and job examples in healthcare, construction, metalwork, cleaning, and laboratories. Further coverage addresses causes and physical examinations, particularly poor glove selection, contamination beneath PPE, and inadequate hygiene facilities. It then considers preventive measures, including elimination or substitution of skin-damaging substances where feasible.

M1L12 – Control Methods and the Hierarchy of Controls
Explore control methods and the hierarchy of controls through control methods – elimination/substitution. These areas involve the need for verification, maintenance, and management oversight and applying substitution during design, procurement, and change management. The content also examines control methods –engineering controls administrative controls and engineering controls, with emphasis on process enclosure, isolation, automation, wet methods, and local exhaust ventilation. Further coverage addresses personal protective equipment, particularly program requirements for training, fit testing, inspection, and replacement.

M1L13 – Occupational Hygiene Information Resources
A systematic review of occupational hygiene information resources starts with sources of help and occupational hygiene tools and sources. The discussion covers the value of reliable information in early hazard recognition and decision-making and integration of digital tools with field judgement and workplace context. Attention then turns to general sources and knowledge collection, occupational hygiene statistics resources, and control guidance resources, with examples including safety Data Sheets as a starting point, not a complete exposure assessment. The content also examines chemical hazards information resources, physical hazards information resources, and biological hazards information resources, with emphasis on technical guidance from regulators and professional bodies.

M1L14 – Organizations, Government Support, and IH Tools
Gain a focused overview of organizations, government support, and IH tools, with initial attention to relevant occupational health and hygiene organisations and professional bodies and relevant government departments on occupational health and hygiene. These areas involve roles of AIHA, ACGIH, BOHS, IOHA, and national hygiene associations and OSHA, NIOSH, MSHA, EPA, CDC, and related federal agencies. The remaining discussion addresses occupational hygiene tools (exposure assessment; reporting; control guidance and checklists) and searching for sources, including structured search strategy using regulator sites, academic databases, and standards portals.

M1L15 – Core IH Framework and Occupational Exposure Risk Management
The learning begins with anticipation, recognition, evaluation, and control as the core IH framework and occupational exposure risk management process to establish the basis for core IH framework and occupational exposure risk management. Key learning areas include the value of the framework in both routine management and incident response and how documentation is essential for continuity, auditability, and trend analysis. Additional focus is placed on anticipation, recognition, and immediate controls, with attention to escalating urgent findings to management without waiting for final reports. The remaining discussion addresses characterisation, monitoring, and evaluation, including describing process, workforce, exposure variability, and control status systematically. Attention then turns to controls and review, with examples including confirming that controls remain functional, used correctly, and still appropriate.

Module 2 - The Lungs

M2L1 – Respiratory Anatomy: Nose to Lungs
Build a clear understanding of respiratory anatomy: nose to lungs by considering lungs and anatomy. Attention is given to distinguishing the conducting zone from the respiratory zone as the basic anatomical framework for exposure science and distinguishing upper from lower respiratory tract anatomy and explain why that distinction matters for hazard recognition. Further coverage addresses nose, throat, and larynx, particularly relating pharyngeal anatomy to aspiration risk, upper-airway irritation, and altered exposure patterns during heavy work. It then considers trachea, bronchi, and lungs, including describing the bronchial tree as a branching conducting network from main bronchi to segmental bronchi and bronchioles.

M2L2 – Respiratory Physiology and Breathing Mechanics
Build a clear understanding of respiratory physiology and breathing mechanics by considering respiration and gas exchange. The discussion covers why respiratory physiology is foundational for interpreting inhalation exposure and pulmonary impairment and examining ventilation-perfusion matching and how mismatch impairs oxygenation even when ventilation appears adequate. The remaining discussion addresses mechanics of breathing and pressure changes, including relating abnormal pressure mechanics to pneumothorax, air trapping, and increased work of breathing. Attention then turns to control of breathing and lung volumes and capacities, with examples including explaining which volumes are measured directly by spirometry and which require other methods.

M2L3 – External, Internal, and Cellular Respiration
Develop a structured understanding of external, internal, and cellular respiration by examining external respiration and internal respiration. The content brings together connecting external respiration to occupational testing through oxygen saturation, arterial blood gases, diffusing capacity, and exertional symptoms and relating internal respiration to exertional work, heat stress, anemia, carbon monoxide exposure, and circulatory limitation. Additional focus is placed on intracellular respiration, with attention to connecting cellular energy demand to physically demanding work and increased ventilatory requirement.

M2L4 – Respiratory Hazards and Particle Deposition
Explore respiratory hazards and particle deposition through hazards and particle size and deposition in the respiratory tract. The material includes emphasising anticipation, recognition, evaluation, and control as the core occupational hygiene framework for respiratory hazards and explaining aerodynamic diameter as the practical size descriptor used for aerosol behavior and deposition. It then considers upper vs lower respiratory tract exposure significance, including relating target-site deposition to occupational disease examples: rhinitis, laryngitis, occupational asthma, silicosis, asbestosis, COPD, and hypersensitivity pneumonitis.

M2L5 – Natural Defenses of the Respiratory System
Understand natural defenses of the respiratory system through a connected review of mucous lining. The content brings together relating defense failure to increased susceptibility to infection, sensitisation, inflammation, and chronic lung injury and distinguishing protective mucus from pathologic hypersecretion that narrows airways and impairs clearance. Further coverage addresses cilia / mucociliary clearance and lymphoid tissue in the upper airway, particularly connecting immune surveillance to occupational bioaerosol exposure, including healthcare, agriculture, waste handling, and damp-building environments. It then considers cough reflex, including explaining the cough reflex as a rapid protective response triggered by mechanical or chemical stimulation of the airways.

M2L6 – AMA Guides and Pulmonary Impairment Rating
The learning begins with AMA Guides for evaluating impairment and rating of impairment to establish the basis for AMA Guides and pulmonary impairment rating. The material includes defining impairment as loss of bodily function and distinguish it from disability, work restriction, and compensation outcome, noting that pulmonary assessment may require integration of imaging, bronchodilator response, diffusing capacity, blood gases, and exercise-related limitation, reviewing the core rating inputs for pulmonary dysfunction: history, examination, spirometry, lung volumes, diffusing capacity, and where indicated gas exchange or exercise data, and identifying common rating errors: using poor-quality spirometry, rating before stability, ignoring bronchodilator status, or confusing impairment with employability.

M2L7 – Pulmonary Function Testing
The learning begins with tests of pulmonary function and spirometry to establish the basis for pulmonary function testing. Key learning areas include connecting pulmonary function testing to occupational programs for workers exposed to silica, coal dust, cotton dust, isocyanates, welding fume, and other respiratory hazards and emphasising acceptability and repeatability requirements, because invalid maneuvers can mimic disease. Further coverage addresses lung volumes and capacities in testing and gas transfer and advanced functional tests, particularly using volume data to separate true restriction from poor effort, obesity-related mechanics, or pseudo-restriction from severe obstruction. It then considers interpretation of results and quality assurance, surveillance, and common pitfalls, including stressing that pulmonary function testing supports exposure management but never replaces primary prevention and engineering control.

Module 3 - The Skin

M3L1 – Skin Anatomy: Layers and Glands
Study skin anatomy: layers and glands from the perspective of skin and occupational dermatoses and anatomy. These areas involve defining skin as a barrier organ, sensory organ, thermoregulatory organ, and route of occupational exposure and relating regional anatomical variation to occupational risk: palms, fingertips, face, flexures, scalp, and genital skin. Further coverage addresses epidermis-dermis and subcutaneous layer, particularly distinguishing superficial skin disease from deeper soft-tissue injury when evaluating occupational lesions. It then considers glands in the skin and sweat glands, including explaining apocrine gland distribution in axillae and groin and its relevance to friction, odor, and intertriginous disease. Additional focus is placed on sebaceous glands, with attention to distinguishing sebaceous gland disorders from eczematous and infectious occupational lesions during assessment.

M3L2 – Skin Anatomy: Blood Supply, Hair, and Nails
Explore skin anatomy: blood supply, hair, and nails through blood vessels and hair. These areas involve emphasising the diagnostic value of lesion color, temperature, capillary refill, and distribution and reviewing hair follicle anatomy, growth cycle, sebaceous association, and regional distribution. It then considers nails, including reviewing nail unit anatomy: nail plate, matrix, bed, folds, cuticle, and hyponychium.

M3L3 – Skin Physiology and Functional Roles
Examine the essential principles of skin physiology and functional roles, beginning with physiology and functions and temperature regulation. The material includes explaining the skin’s barrier, sensory, immunologic, secretory, excretory, metabolic, and thermoregulatory functions and including practical relevance of acclimatization, hydration, rest cycles, and clothing systems in skin protection. Attention then turns to sweat and ultraviolet light (photoallergy), with examples including addressing occlusive gloves and clothing as major contributors to overhydration and barrier breakdown in hands and flexures. The content also examines skin absorption (hair follicles and sweat ducts as pathways of entry), with emphasis on explaining percutaneous absorption through the stratum corneum as the major dermal route, with appendageal pathways as secondary routes.

M3L4 – Skin Defense, Definitions, and Incidence
Develop a structured understanding of skin defense, definitions, and incidence by examining defense mechanisms and definitions and incidence of occupational skin disorders. The material includes explaining the stratum corneum, surface lipids, acid mantle, microbiome, immune surveillance, and repair processes as defense systems and defining occupational skin disorder as skin disease caused, aggravated, or maintained by workplace exposure. It then considers dermatosis vs dermatitis, including distinguishing inflammatory eczema-type disease from non-inflammatory traumatic, neoplastic, or degenerative skin conditions.

M3L5 – Chemical Causes of Occupational Skin Disease
Explore chemical causes of occupational skin disease through direct causes of occupational skin disease and chemical (irritants). The material includes emphasising review of SDSs, skin notations, task observation, and worker history during hazard recognition and differentiating acute irritants from cumulative irritants and explain dose dependence. It then considers chemical (sensitizers) and chemical (photoallergic contact dermatitis), including identifying occupationally relevant agents such as certain antimicrobials, dyes, fragrances, plant-derived compounds, coal tar derivatives, and selected medications.

M3L6 – Mechanical, Physical, Biological, and Botanical Causes
Study mechanical, physical, biological, and botanical causes from the perspective of physical. These areas involve recognising the contribution of poorly fitted PPE, repetitive manual tasks, kneeling, gripping, and rough surfaces and recognising physical causes of erythema, burns, frostbite, chilblains, pigment change, photoaging, and chronic degeneration. The content also examines biological and botanical, with emphasis on covering occupational skin disease due to bacteria, fungi, viruses, parasites, arthropods, and biologically derived allergens.

M3L7 – Predisposing Factors in Occupational Dermatoses
Review the main elements of predisposing factors in occupational dermatoses, starting with age and experience. These areas involve using predisposing factors to improve surveillance, counseling, work placement, and early intervention and noting that younger or newly hired workers may have high risk because of inexperience, poor technique, and inadequate hazard recognition. Additional focus is placed on skin type, sweating, and gender, with attention to explaining that baseline dryness, oiliness, thickness, and regional variation affect barrier performance and symptom expression. The remaining discussion addresses seasons and humidity, hereditary allergy (atopy), and personal hygiene, including recognising that outdoor work adds wind, sun, and cold stress as modifiers of disease severity. Attention then turns to preexisting skin disease, with examples including emphasising early occupational health referral, individualized work restrictions, and reassessment after treatment response.

M3L8 – Classification of Occupational Skin Disease I
Consider classification of occupational skin disease i by first reviewing contact dermatitis. The content brings together distinguishing diseases caused by work from those merely aggravated by work while recognizing overlap and using morphology, distribution, work relationship, and patch testing to support subtype classification. The remaining discussion addresses contact urticaria/latex allergy and photosensitivity, including including prevention through source control, scheduling, shielding, clothing, sunscreen policy, and worker training. Attention then turns to occupational acne and pigmentary abnormalities, with examples including emphasising contamination control, clothing hygiene, showering facilities, and substitution of problematic agents.

M3L9 – Classification of Occupational Skin Disease II
The learning begins with sweat-induced reactions, including miliaria and intertrigo and cutaneous tumors to establish the basis for classification of occupational skin disease II. These areas involve relating risk to impermeable PPE, gloves, boots, body habitus, prolonged sitting, and high heat load and noting that tumor classification has implications for compensation, permanence, and return-to-work planning. It then considers ulcerations, granulomas, and alopecia, including noting scalp distribution, reversibility, and psychosocial impact. Additional focus is placed on nail disease, systemic intoxication, and systemic disease resulting from skin exposure, with attention to including the role of biomonitoring and integrated exposure assessment when dermal uptake is suspected. The remaining discussion addresses photoaging / UV-related degeneration, including covering chronic UV-induced changes such as wrinkling, elastosis, telangiectasia, roughness, dyspigmentation, and actinic keratoses.

M3L10 – Occupational Burns
Develop a structured understanding of occupational burns by examining burns and nature of chemical burns. The content brings together defining occupational burns as tissue injury from thermal, chemical, electrical, radiation, friction, or cryogenic sources and stressing immediate decontamination, clothing removal, and prolonged irrigation unless agent-specific protocols differ. It then considers classification of burns and complications of burns, including recognising that small burns on hands, face, genitalia, or over joints may have disproportionate functional consequences.

M3L11 – Diagnosis and Treatment of Occupational Dermatoses
A systematic review of diagnosis and treatment of occupational dermatoses starts with appearance of the lesion. The material includes emphasising parallel evaluation of workplace controls while clinical diagnosis proceeds and noting lesion stage because acute and chronic forms of the same disease may look very different. The remaining discussion addresses sites of involvement and history and course of the disease, including using exposure reconstruction when the responsible agent is not obvious or the worker has changed jobs. Attention then turns to ancillary diagnostic tests and treatment, with examples including using workplace assessment, glove/permeation review, and sometimes product ingredient disclosure to complete diagnosis.

M3L12 – Workers’ Compensation Evaluation of Occupational Dermatoses
Examine the essential principles of workers’ compensation evaluation of occupational dermatoses, beginning with evaluation of occupational dermatoses for workers’ compensation. The material includes emphasising that compensation analysis should support prevention as well as fair adjudication and defining the medicolegal questions: what is the diagnosis, is it work-related, is it permanent, and what work limitations remain. The content also examines diagnosis and causation, with emphasis on evaluating whether work was the probable cause, a substantial contributing factor, or merely a trigger for a preexisting condition. Further coverage addresses impairment evaluation and conclusions and recommendations, particularly distinguishing temporary disease activity from permanent impairment after maximal medical improvement. It then considers physical examinations, including perform a complete skin examination relevant to the complaint, not just a cursory inspection of the visible lesion.

M3L13 – Prevention and Control of Occupational Skin Disease
Understand prevention and control of occupational skin disease through a connected review of environment (environmental cleanliness / housekeeping). These areas involve treating recurring skin cases as evidence that existing controls are inadequate or poorly implemented and including skin-safe cleaning methods; avoid using workers’ skin as the “cleaning tool” for equipment or hands. It then considers monitoring and control technology (preventability of occupational skin disease) and personal cleanliness, including applying administrative controls including wet-work limitation, rotation, maintenance scheduling, contamination checks, and decontamination protocols. Additional focus is placed on personal protective equipment and responsibility for control, with attention to assigning clear responsibilities to management, supervisors, procurement, occupational hygiene, occupational health, workers, and contractors. The remaining discussion addresses case examples of control, including construction and cement work: control chromate exposure, provide appropriate gloves and washing facilities, and remove wet contaminated clothing promptly.

Module 4 - The Ears

M4L1 – Ear Anatomy and Physiology
Understand ear anatomy and physiology through a connected review of ears. Key learning areas include introducing common workplace consequences of ear dysfunction: communication failure, safety incidents, reduced situational awareness, and permanent impairment and connecting auditory anatomy to vestibular anatomy by emphasizing the shared inner-ear location and fluid systems. Further coverage addresses external ear and middle ear, particularly noting occupational issues involving the external ear: earplug fit, occlusion, dermatitis, trauma, and contamination. It then considers inner ear, including describing how the vestibular system detects angular and linear acceleration for balance and gaze stabilization.

M4L2 – Pathology of the External, Middle, and Inner Ear
Build a clear understanding of pathology of the external, middle, and inner ear by considering pathology of the external ear. Key learning areas include defining pathology in terms of structural change, functional loss, symptoms, signs, and diagnostic correlation and examining implications for otoscopy, hearing protector tolerance, and accurate audiometric testing. It then considers pathology of the middle ear and pathology of the inner ear, including relating middle-ear disease to conductive or mixed hearing loss, tinnitus, aural fullness, and abnormal bone–air gaps.

M4L3 – Hearing Disorders and Ototoxic Co-Exposures
Study hearing disorders and ototoxic co-exposures from the perspective of tinnitus and conductive hearing loss. The discussion covers how tinnitus may disrupt concentration, sleep, mental health, and work performance even when audiometric loss seems modest and defining conductive loss as impaired sound transmission through the outer or middle ear. Additional focus is placed on sensorineural hearing loss and vestibular dysfunction, with attention to emphasising workplace implications: vehicle operation, work at height, confined spaces, ladders, uneven terrain, and emergency response tasks. The remaining discussion addresses ototoxic co-exposures, including why co-exposure assessment must include airborne concentration, skin absorption potential, peak tasks, and concurrent noise dose.

M4L4 – Hearing Process and Core Measurement Methods
Explore hearing process and core measurement methods through hearing measurement. The discussion covers relating hearing physiology to speech understanding, warning-signal detection, and localization in real workplaces and defining hearing assessment as measurement of threshold sensitivity, speech understanding, middle-ear status, cochlear function, and functional communication ability. It then considers audiometer and audiogram, including teaching interpretation of type, degree, configuration, symmetry, notches, slopes, and air–bone gaps. Additional focus is placed on air conduction testing and bone conduction testing, with attention to explaining bone conduction as direct stimulation of the cochlea through skull vibration, bypassing most outer- and middle-ear transmission mechanisms.

M4L5 – Otoacoustic Emissions and Effects of Noise Exposure
A systematic review of otoacoustic emissions and effects of noise exposure starts with otoacoustic emissions testing. The discussion covers covering practical uses: early cochlear dysfunction detection, difficult-to-test populations, cross-checking results, and auditory neuropathy patterns and defining hazardous noise in terms of level, duration, temporal pattern, and susceptibility of the exposed worker. Additional focus is placed on noise-induced hearing loss (temporary threshold shift (TTS); permanent threshold shift (PTS); factors that influence noise-induced hearing loss (sound level; frequency distribution; duration; temporal distribution; type of sound energy; individual differences; concurrent ototoxic exposures)) and nonauditory effects of noise, with attention to emphasising prevention through source control, path control, hearing protector fit and use, exposure monitoring, and periodic audiometric review.

M4L6 – Communication Impacts of Hearing Loss
The learning begins with loudness to establish the basis for communication impacts of hearing loss. The discussion covers why hearing loss affects message access, turn-taking, localization, fatigue, and confidence in dynamic workplaces and distinguishing the need for greater sound level from the separate problem of poor clarity. The content also examines clarity, speech sounds, and background noise, with emphasis on relating background noise to industrial floors, vehicles, workshops, call centers, and open-plan work areas. Further coverage addresses quality of life, rehabilitation, and further medical evaluation, particularly emphasising the occupational and personal value of early identification and timely intervention.

M4L7 – AMA Guides for Hearing Impairment
Study AMA Guides for hearing impairment from the perspective of evaluating impairment: the AMA Guides. These areas involve defining impairment as permanent loss of body structure or function and distinguish it from disability, work restriction, and compensation outcome and reinforcing ethics: objectivity, consistency, transparency, and avoidance of advocacy masquerading as medical assessment.

M4L8 – OSHA Hearing Conservation Program
Build a clear understanding of OSHA hearing conservation program by considering OSHA hearing conservation program (29 CFR 1910.95). Attention is given to explaining scope, purpose, and trigger: a continuing hearing conservation program is required when employee noise exposure equals or exceeds an 8-hour TWA of 85 dBA and emphasising program effectiveness beyond compliance: engineering and administrative controls first, then hearing protection, fit verification, periodic review, and management accountability.

Module 5 - The Eyes

M5L1 – Eye Anatomy and Binocular Vision
Build a clear understanding of eye anatomy and binocular vision by considering eyes and external and protective anatomy. Attention is given to distinguishing central vision, peripheral vision, near vision, distance vision, and light adaptation functions and linking external anatomy to common workplace complaints such as irritation, redness, crusting, and foreign-body sensation. It then considers optical media and internal structures and retina and supporting layers, including relating retinal anatomy to field loss, color deficits, night-vision problems, and central- vision impairment. Additional focus is placed on binocular vision, with attention to defining binocular vision as coordinated use of both eyes to create a single percept.

M5L2 – Eye Specialists, Examinations, and Corrective Lenses
Understand eye specialists, examinations, and corrective lenses through a connected review of eye problems. The discussion covers emphasising that screening does not replace a comprehensive eye examination and defining the ophthalmologist as the medically trained eye specialist who diagnoses, treats, and performs surgery. Attention then turns to examining instruments and core tests and Snellen chart and visual acuity interpretation, with examples including including pupil, ocular-motility, stereopsis, and color-vision testing when clinically or occupationally indicated. The content also examines eye defects, legal blindness, and low vision and eyeglasses and corrective lenses, with emphasis on reviewing lenses for myopia, hyperopia, astigmatism, and presbyopia.

M5L3 – Visual Performance Fundamentals
Build a clear understanding of visual performance fundamentals by considering visual acuity. The material includes emphasising that visual performance must be assessed in the actual task environment, not only in the clinic and defining visual acuity as the clarity or sharpness of vision for detail discrimination. It then considers dark adaptation and depth perception, including explaining texture gradient as a cue that becomes important in floors, stairs, and uneven surfaces. Additional focus is placed on color vision, with attention to explaining normal trichromatic color vision and its importance in signal recognition and quality control.

M5L4 – Common Eye Disorders and Disease
The learning begins with conjunctivitis, infections, and uveitis to establish the basis for common eye disorders and disease. The material includes reinforcing prompt referral when symptoms suggest sight-threatening disease and defining conjunctivitis as inflammation of the conjunctiva and distinguish viral, bacterial, allergic, and irritant patterns. It then considers glaucoma and cataracts, including defining glaucoma as optic-nerve damage associated with progressive vision loss, often starting peripherally. Additional focus is placed on excessive brightness and night blindness and eyestrain and nystagmus, with attention to defining eyestrain or asthenopia as visual discomfort linked to sustained focusing, glare, dry eye, poor correction, or poor ergonomics.

M5L5 – Mechanical and Thermal Eye Hazards
Analyse mechanical and thermal eye hazards by starting with physical hazards and blows from objects and blunt trauma. Key learning areas include classifying mechanical eye hazards as impact, penetration, abrasion, crush, and foreign- body events and identifying symptoms demanding urgent referral, including severe pain, vision loss, irregular pupil, and persistent floaters. The content also examines corneal lacerations and abrasions and blink reflex and foreign bodies, with emphasis on distinguishing loose surface material from embedded or high-velocity penetrating material. Further coverage addresses thermal burns and practical prevention and immediate response, particularly examining long-term sequelae such as scarring, dry eye, infection risk, and visual impairment.

M5L6 – Radiation and Chemical Eye Hazards, First Aid, and Eyewash Standards
Develop a structured understanding of radiation and chemical eye hazards, first aid, and eyewash standards by examining irradiation burns and common occupational optical radiation sources. Key learning areas include connecting acute exposure to photokeratitis, conjunctival irritation, retinal injury, or lens damage and relating source type to probable target tissue: cornea, lens, retina, skin, or whole-body heat burden. Attention then turns to laser hazards and chemical hazards and chemical burns, with examples including relating SDS review and process knowledge to chemical-burn preparedness. The content also examines evaluating eye hazards and first aid, with emphasis on including nearby workers, maintenance staff, contractors, and emergency responders in the exposure analysis. Further coverage addresses ANSI z358.1-1990 and later editions, particularly linking eyewash standards to inspection, weekly activation checks, maintenance records, and worker training.

M5L7 – Eye Protection Standards and Applications
Study eye protection standards and applications from the perspective of protective equipment and ANSI z87.1-1989 and later editions. The material includes matching the device to impact, splash, dust, radiant-energy, and combined hazards and explaining lens and frame markings, impact ratings, and special-use designations in modern protector selection. Further coverage addresses impact protection and eye protection for welding, particularly highlighting common failure modes such as poor fit, missing side shields, scratched lenses, and intermittent wear. It then considers laser beam protection and selection, compatibility, maintenance, and training, including audit actual field use to identify bypass, misuse, and recurrent injury patterns.

M5L8 – Practical Eye Protection Issues in the Workplace
Review the main elements of practical eye protection issues in the workplace, starting with visual display terminals (VDTs) and sunglasses. Attention is given to examining glare control through screen positioning, shading, indirect lighting, and luminance balance and addressing tint, visible-light transmission, polarization, and lens color as performance variables. It then considers contact lenses and comfort and fit, including how poor fit causes pressure points, slippage, fogging, reduced wear time, and exposure gaps. Additional focus is placed on workforce acceptance and common pitfalls, with attention to linking acceptance problems to supervision, training quality, and availability of properly selected alternatives.

M5L9 – Vision Conservation Program
Study vision conservation program from the perspective of environmental survey. These areas involve defining the vision conservation program as a structured system for preventing occupational eye injury, visual deterioration, and unrecognized visual limitation and converting survey findings into written corrective actions, priorities, and accountability. Additional focus is placed on vision screening program and remedial program, with attention to track completion of referrals and resolution of identified visual problems. The remaining discussion addresses professional fitting and guidelines and ocular emergencies, including audit emergency performance through drills, equipment checks, and incident reviews. Attention then turns to program-wide participation / 100% coverage guidance, with examples including emphasising full coverage as a management-system requirement, not an optional enhancement.

M5L10 – AMA Guides for Visual Impairment
The learning begins with AMA Guides to the evaluation of permanent impairment and clinical evaluation of vision loss to establish the basis for AMA Guides for visual impairment. These areas involve defining impairment as loss of body function and distinguish it from disability, work capacity, and compensation outcome and begin with a structured history covering mechanism, onset, treatment, symptoms, prior vision, and occupational demands. It then considers visual acuity assessment for impairment rating and visual field assessment for impairment rating, including relating field loss to navigation, hazard detection, driving, and machine-operation demands. Additional focus is placed on special rating considerations and calculating the visual impairment rating, with attention to integrating special modifiers such as central scotoma or reading-acuity elements where applicable. The remaining discussion addresses reporting, consistency, and quality assurance, including attach or reference the actual examination data used in the rating.

Module 6 - Industrial Toxicology

M6L1 – Core Concepts in Industrial Toxicology
Gain a focused overview of core concepts in industrial toxicology, with initial attention to industrial toxicology in occupational hygiene and toxicity versus hazard. Attention is given to distinguishing hazard recognition from diagnosis, treatment, and compensation systems and why highly toxic materials may pose low risk in closed systems and vice versa. Additional focus is placed on toxic effect and local toxicity vs systemic toxicity, with attention to highlighting implications for monitoring, medical surveillance, and control selection. The remaining discussion addresses factors that influence hazard, including physiological State: include age, sex, pregnancy, health status, genetics, nutrition, workload, and medication use.

M6L2 – Occupational Health Foundations, Causation, and Risk Concepts
Examine the essential principles of occupational health foundations, causation, and risk concepts, beginning with occupational health foundations and epidemiology and the human body in the workplace. The content brings together defining occupational health as protection of worker well-being from work-related disease and impairment and reviewing how sensory, respiratory, dermal, circulatory, and nervous systems interact with workplace stressors. It then considers establishing causal relationships and occupational disease compared with occupational injuries, including the Damage Factor: compare local trauma with systemic, subclinical, or progressive organ injury. Additional focus is placed on what the health and safety practitioner needs to know and threshold versus non-threshold effects; ALARP; hazard, risk, and dose for physical agents, with attention to extend hazard-risk-dose thinking to noise, radiation, vibration, heat, and other physical agents.

M6L3 – Occupational Epidemiology
Explore occupational epidemiology through purpose and scope of occupational epidemiology and how are these studies conducted?. Key learning areas include showing how epidemiology complements toxicology when evaluating human health effects and cohort Studies: compare disease incidence or mortality in exposed and unexposed groups over time. Attention then turns to a few relevant epidemiological terms and practical significance, with examples including defining incidence, prevalence, mortality, morbidity, latency, and exposure misclassification.

M6L4 – Entry into the Body and Metabolic Alteration
Build a clear understanding of entry into the body and metabolic alteration by considering inhalation. The content brings together identifying inhalation, skin absorption, ingestion, and injection as principal routes of entry and linking inhalation hazards to personal air monitoring and breathing-zone sampling. Additional focus is placed on skin absorption; ingestion; injection and hepatic detoxification / metabolic alteration after absorption, with attention to introducing absorption, distribution, metabolism, and excretion as the core toxicokinetic sequence. The remaining discussion addresses implications for exposure assessment and control, including recognising multi-route exposure when air data underestimate actual dose.

M6L5 – Dose-Response Relationships
A systematic review of dose-response relationships starts with threshold concept. The content brings together why dose-response analysis underpins toxicological interpretation and standard setting and explaining the idea of a threshold below which no adverse effect is observed. It then considers exposure thresholds; NOAEL; LOAEL and lethal dose; lethal concentration; responses, including how uncertainty factors are applied when extrapolating animal or limited human data. Additional focus is placed on workplace application of dose-response concepts, with attention to translating toxicological dose descriptors into time-weighted averages, STELs, ceilings, and peaks.

M6L6 – Exposure Timing, Irritation, and Allergic Response
Consider exposure timing, irritation, and allergic response by first reviewing timing: exposure and effect and acute effects and acute exposures. The content brings together distinguishing exposure pattern from health-effect timing, including immediate, delayed, acute, and chronic outcomes and explaining that single exposures can still cause delayed effects or permanent injury. The content also examines chronic effects and chronic exposures and effects of exposure to air contaminants: irritation, with emphasis on linking chronic exposure to trend monitoring, periodic review, and occupational history taking. Further coverage addresses allergens: hypersensitivity and hypersusceptibility, particularly defining allergens and sensitisers that provoke immune-mediated responses after prior exposure.

M6L7 – Systemic Toxins: Asphyxiants and Organ-Specific Effects
Review the main elements of systemic toxins: asphyxiants and organ-specific effects, starting with simple asphyxiants and chemical asphyxiants. The material includes relating systemic toxicity to biomonitoring, medical surveillance, and route-specific controls and comparing warning properties, symptom progression, rescue risk, and atmospheric testing needs. The remaining discussion addresses organ-specific effects and PNOS / particulates not otherwise specified and heavy metals, including pulmonary Effects: include edema, fibrosis, occupational asthma, chronic airflow limitation, and diffusion impairment. Attention then turns to assessment and control of systemic toxicants, with examples including using PPE and respiratory protection as supplemental controls, not substitutes for design control.

M6L8 – Carcinogenesis, Mutagenesis, and Reproductive Toxicity
Gain a focused overview of carcinogenesis, mutagenesis, and reproductive toxicity, with initial attention to its purpose, scope, and principal concepts. The discussion covers defining carcinogenesis and distinguish initiation, promotion, progression, and latency and defining mutagenesis as heritable change in genetic material at the gene or chromosomal level. It then considers reproductive toxicity and pregnant workers and early-pregnancy vulnerability, including including effects on hormones, gametes, implantation, fetal growth, and lactation- relevant exposure. Additional focus is placed on prevention and professional practice, with attention to aligning SDS review, training, reproductive hazard communication, and medical referral pathways.

M6L9 – Basis for Workplace Standards
Consider basis for workplace standards by first reviewing chemical analogy and in-vitro testing. These areas involve distinguishing health-based recommendations from enforceable regulatory limits and explaining strengths of rapid mechanistic insight and weaknesses in predicting whole- body response. The remaining discussion addresses animal experimentation and human epidemiological data, including examining extrapolation limits, uncertainty factors, species differences, and modern efforts to reduce animal use. Attention then turns to integrating evidence into standards, with examples including applying weight-of-evidence thinking across mechanistic, animal, and human findings.

M6L10 – Toxicology-Related Federal Regulations I
A systematic review of toxicology-related federal regulations i starts with Occupational Safety and Health Act (OSH Act). The discussion covers clarifying roles of OSHA, NIOSH, EPA, and other agencies in a layered regulatory system and relating toxicological evidence to hazard communication, exposure standards, and medical provisions. Attention then turns to TSCA and toxic substances list and NIOSH/OSHA standards, with examples including explaining TSCA as EPA’s framework for chemical review, risk evaluation, and risk management of industrial chemicals. The content also examines right-to-know regulation, with emphasis on including hazard classification, mixtures, downstream communication, and inventory management.

M6L11 – Toxicology-Related Federal Regulations II
Examine the essential principles of toxicology-related federal regulations II, beginning with permissible exposure limits (PELs) and NIOSH criteria documents. The content brings together how legacy PELs may lag current toxicological knowledge for many substances and explaining Criteria Documents as comprehensive evaluations supporting recommendations for worker protection. Additional focus is placed on Recommended Exposure Limits (RELs) and current intelligence bulletins (CIBs), with attention to comparing RELs with PELs and OELs from other bodies when selecting internal benchmarks. The remaining discussion addresses applying federal toxicology guidance in practice, including aligning sampling strategy, hazard communication, and surveillance with the selected benchmark.

M6L12 – ACGIH TLVs Fundamentals
The learning begins with TLVs® and limitations of TLVs to establish the basis for ACGIH TLVs fundamentals. The material includes showing how TLVs® support evaluation and control of workplace exposures and explaining that TLVs® are intended for trained occupational hygienists, not lay interpretation. Additional focus is placed on time-weighted average and ceiling values, with attention to defining ceiling values as concentrations that should never be exceeded. The remaining discussion addresses mixtures, including seek specialist toxicological input for poorly characterized or complex mixed exposures.

M6L13 – ACGIH TLVs Advanced Application
Analyse ACGIH TLVs advanced application by starting with carcinogens and physical factors and unlisted substances; basic data used for TLVs; documentation. These areas involve covering TLVs for physical factors such as noise, heat stress, radiation, and lighting- related exposures where relevant and verifying chronology, notations, and basis before adopting TLVs into policy. The content also examines short-term exposure limits (STELs) and antagonism / potentiation / synergism, with emphasis on stressing the need for sampling methods capable of resolving high short-term variability. Further coverage addresses advanced professional use, particularly reassessing when new documentation, revised categories, or updated evidence emerges.

M6L14 – Occupational Exposure Limit Concepts and Interpretation
Understand occupational exposure limit concepts and interpretation through a connected review of occupational exposure limit concepts and regulatory use and a brief history of occupational exposure limits. The content brings together emphasising that absence of an OEL does not mean absence of hazard and tracing development from early maximum allowable concentrations to modern OEL frameworks. Further coverage addresses definition of occupational exposure limits and units of concentration, particularly matching units correctly between monitoring data and applicable exposure criteria. It then considers interpretation of exposure standards, including how nearly All Workers: explain that most, not all, workers are expected to be protected.

M6L15 – OEL Application, Extended Shifts, BEIs, and Compliance Decisions
Develop a structured understanding of OEL application, extended shifts, BEIs, and compliance decisions by examining adjustments for extended work shifts and biological exposure indices. Attention is given to documenting clearly which adjustment model is used and why and defining BEIs® as biological guidance values linked to uptake rather than airborne concentration alone. Further coverage addresses the future of occupational exposure limits and making compliance decisions based on regulatory use of exposure standards, particularly escalating action when results approach limits, trends worsen, or susceptible workers are involved. It then considers contemporary application issues, including recognising that combined dermal and inhalation exposure can make airborne compliance incomplete.

M6L16 – Biological Testing and Biological Monitoring Basics
Explore biological testing and biological monitoring basics through urine, blood, and breath analyses. Key learning areas include identifying situations where air sampling alone underestimates real exposure and unchanged Substances: measure parent compounds when kinetics allow. It then considers using biological monitoring; health monitoring; selection of sample matrix and accounting for daily urine volume in biological monitoring, including specific Gravity: correct for urinary concentration differences across samples. Additional focus is placed on chemical elimination from the body and skin absorption, with attention to using biomonitoring to detect multi-route exposure and evaluate control adequacy.

M6L17 – Biological Monitoring Programme Design, Privacy, and Evaluation
Build a clear understanding of biological monitoring programme design, privacy, and evaluation by considering biological monitoring programme leadership and planning and monitoring process and logistics. The discussion covers decide what, where, and who to measure using process review and exposure grouping and analytics: select validated methods, qualified laboratories, and fit-for-purpose detection limits. The content also examines reference levels, statistics, and additional data and consultation, consent, and privacy, with emphasis on evaluating whether results reflect current exposure, cumulative burden, or abnormal event exposure. Further coverage addresses results, feedback, actions, and programme evaluation, particularly how evaluation: review whether the programme answers the intended exposure question and improves control.

M6L18 – Sources of Toxicological Information
Develop a structured understanding of sources of toxicological information by examining material safety data sheet. The content brings together distinguishing primary scientific evidence from summaries, interpretations, and commercial materials and recognising limitations of SDSs for mixed-process exposures, transformation products, and detailed dose-response interpretation. The remaining discussion addresses core toxicological and occupational hygiene information resources and search strategy and appraisal of information resources, including using professional sources such as ACGIH, BOHS, AIHA, and occupational hygiene guidance publications. Attention then turns to practical information management for toxicology work, with examples including using digital databases, monitoring-method libraries, and professional networks to fill data gaps responsibly.

Module 7 - Gases, Vapors, and Solvents

M7L1 – Physical Properties of Gases, Vapors, and Solvents
Review the main elements of physical properties of gases, vapors, and solvents, starting with volatility from solution. These areas involve connecting substance properties to anticipation, recognition, evaluation, and control in workplace settings and why volatile components partition from liquid mixtures into workplace air and why solution composition changes over time during use. Further coverage addresses ph effects on volatility and polarity, particularly emphasising field implications for storage, accidental mixing, spill response, and process upset conditions. It then considers “like dissolves like”, including using the principle to explain solubility, residue removal, degreasing efficiency, and formulation choices in industry.

M7L2 – Solvent Behavior in the Body
The learning begins with solubility and distribution in the body and lipophilicity and dermal absorption to establish the basis for solvent behavior in the body. The material includes relating route of exposure to dose delivered, including inhalation, skin absorption, and incidental ingestion and how tie lipophilicity to glove breakthrough, skin notation, decontamination timing, and exposure underestimation when only air monitoring is used. The content also examines blood-brain barrier considerations and adipose storage of fat-soluble chemicals, with emphasis on describing how fat-soluble chemicals accumulate in adipose tissue and are released gradually after exposure ends.

M7L3 – Warning Signs and Exposure Indicators
Consider warning signs and exposure indicators by first reviewing critical exposure factors and warning signs and indicators. The material includes showing how exposure indicators differ for acute irritants, narcotic solvents, sensitizers, asphyxiants, and poorly warned carcinogens and identifying common field indicators: odor, visible vapor or mist, eye watering, cough, headache, taste, dizziness, corrosion, discoloration, and monitor alarms. The remaining discussion addresses odour and irritation, including differentiating sensory irritation from corrosive injury, sensitization, and systemic toxicity.

M7L4 – Critical Exposure Factors
The learning begins with mode of use and potential for exposure and spray application vs brush / roller application to establish the basis for critical exposure factors. The content brings together comparing closed transfer, enclosed processing, hand-wiping, dip tanks, mixing, spraying, and cleanup as very different exposure scenarios for the same chemical and relating method selection to product chemistry, surface area, rework frequency, and enclosure feasibility. It then considers skin permeation through gloves, DMSO as a carrier for other chemicals, and temperature and volatility, including addressing cross-contamination from benches, wipes, tools, and glove surfaces. Additional focus is placed on concentration, reactivity, and exposure guidelines, with attention to emphasising storage segregation, labeling, transfer-line identification, and management of change.

M7L5 – Solvents and Organic Chemistry Basics
Consider solvents and organic chemistry basics by first reviewing solvents. These areas involve defining solvents by function and classify them as hydrocarbon, oxygenated, halogenated, water-based, and specialty process solvents, emphasising substitution principles that seek lower toxicity, lower volatility, and better process containment, introducing carbon-based structure, bonding, functional groups, and why structure governs solvent behavior and hazard, and explaining isomerism, chain length, unsaturation, and substitution patterns as determinants of boiling point, polarity, and metabolism.

M7L6 – Hazard Classes of Gases, Liquids, Solvents, and Vapors
Examine the essential principles of hazard classes of gases, liquids, solvents, and vapors, beginning with hazards of gases, liquids, solvents, and vapors and compressed gas. The content brings together emphasising that a single substance may belong to several classes at once and explaining pressure energy hazards, cylinder projectile risk, valve damage, regulator misuse, and hose failure. Attention then turns to gases and cryogenic liquids (oxygen deficiency hazards from cryogenic releases), with examples including examining invisibility of many gases and the resulting reliance on monitoring, ventilation, and permit systems. The content also examines flammability, explosions, and reactivity and pyrophoric materials, with emphasis on defining pyrophoric liquids, solids, and gases and explain spontaneous ignition in air. Further coverage addresses detonation vs deflagration, particularly relating the distinction to vapor cloud explosions, dust-gas interactions, and confined- space fire behavior.

M7L7 – Toxicological Effects of Gases and Vapors I
Analyse toxicological effects of gases and vapors i by starting with site of action. Key learning areas include introducing the importance of exposure timing, work rate, heat stress, and co-exposures and separating local effects at portals of entry from systemic effects after absorption and distribution. The remaining discussion addresses asphyxiation and organic and inorganic gases, including examining how solubility, reactivity, and metabolism influence acute and chronic outcomes.

M7L8 – Toxicological Effects of Gases and Vapors II
A systematic review of toxicological effects of gases and vapors II starts with inorganic acids and bases and other aqueous solutions and systems. The discussion covers reviewing corrosive injury mechanisms for acid and alkali gases, vapors, and mists affecting eyes, skin, and respiratory tissue and why aqueous systems can still generate significant vapor, mist, and off- gassing hazards depending on composition and process conditions. The remaining discussion addresses solvents and solvent vapors, including relating solvent toxicology to exposure guideline interpretation, biological monitoring, and return-to-work decisions.

M7L9 – Physiological Effects of Hydrocarbon and Oxygenated Solvents
Analyse physiological effects of hydrocarbon and oxygenated solvents by starting with hydrocarbons. Key learning areas include distinguishing reversible functional changes from persistent structural injury after repeated or intense exposure and comparing aliphatic, aromatic, and halogenated hydrocarbon solvents in terms of volatility, lipophilicity, and target-organ effects. Additional focus is placed on oxygen-containing functional groups, with attention to using functional-group reasoning to anticipate hazards of unfamiliar solvent names in SDSs and formulations.

M7L10 – Other Factors and Air Pollution Context
Review the main elements of other factors and air pollution context, starting with its purpose, scope, and principal concepts. These areas involve addressing environmental and operational modifiers of exposure such as humidity, air movement, workload, elevation, and background contamination and emphasising source characterization, emission control, and communication across EHS and environmental functions. Attention then turns to upper atmosphere effects and global warming, with examples including linking occupational chemical management with sustainability, process redesign, and safer substitution.

M7L11 – Hazard Evaluation and Exposure Measurement Concepts
Gain a focused overview of hazard evaluation and exposure measurement concepts, with initial attention to evaluation of hazards and understanding exposure measurement in the workplace. These areas involve using process review, SDSs, incident history, worker interviews, and walkthrough observations to refine the assessment and explaining representative sampling, similar exposure groups, randomization, and the importance of non-routine operations. The remaining discussion addresses monitoring of gases and vapours, including connecting monitoring results to interpretation, communication, corrective action, and follow-up review.

M7L12 – Monitoring Methods for Gases and Vapours
Build a clear understanding of monitoring methods for gases and vapours by considering options for monitoring the workplace air and direct-reading instruments. Key learning areas include comparing screening, diagnostic, compliance, continuous, fixed-area, and personal monitoring strategies and including direct-reading badges as screening or task-support tools where appropriate. The remaining discussion addresses specific direct-reading monitors, general-purpose direct-reading analysers, and sample collection techniques, including reviewing desorption, storage, transport, blanks, field notes, and preservation requirements. Attention then turns to testing compressed breathing air, tips for personal monitoring, and monitoring the worker: biological monitoring, with examples including placing sampling devices in the breathing zone and align timing with actual exposure tasks rather than nominal shift patterns.

M7L13 – Common Gas or Vapour Hazards I
Build a clear understanding of common gas or vapour hazards i by considering flammable/explosive gases. Attention is given to reinforcing that common hazards still account for severe acute incidents and chronic disease and defining lower and upper explosive limits for flammable gases and vapours and explain the combustible range. Additional focus is placed on ammonia and benzene, with attention to including training on release recognition, evacuation, PPE limits, and incident reporting.

M7L14 – Common Gas or Vapour Hazards II
Analyse common gas or vapour hazards II by starting with carbon monoxide and chlorine. The discussion covers reviewing use and occurrence in combustion sources, engines, heaters, generators, furnaces, fires, and enclosed loading areas and covering standards and monitoring with substance-specific sensors, detector tubes, and leak-response protocols. The content also examines formaldehyde and hydrogen sulfide, with emphasis on reviewing use and occurrence in resins, laboratories, pathology, healthcare, manufacturing, and off-gassing materials. Further coverage addresses mercury vapour and oxides of nitrogen (NOx), particularly reviewing occurrence in the oil industry, laboratories, instruments, artisanal processes, and legacy equipment or spills.

M7L15 – Atmospheric Hazards in Confined Spaces
Consider atmospheric hazards in confined spaces by first reviewing atmospheric hazards associated with confined spaces and oxygen deficiency and enrichment. Attention is given to connecting hazard recognition to design, isolation, cleaning method, residue history, and adjacent processes and emphasising testing sequence, stratification concerns, and continuous monitoring where conditions can change. It then considers toxic atmospheres and flammable/explosive atmospheres, including examining the effect of ventilation dead zones, trapped pockets, and temperature change on combustible readings. Additional focus is placed on evaluation, entry control, and emergency response, with attention to integrating hazard evaluation with permit systems, competent-person responsibilities, attendant duties, and communication protocols.

M7L16 – Emerging Monitoring Technology
Build a clear understanding of emerging monitoring technology by considering wireless technology and remote monitoring. The content brings together defining emerging monitoring technology as connected, miniaturized, wearable, and data-enabled systems that supplement conventional occupational hygiene methods and how telemetry, fixed-network sensors, personal wearables, and remote dashboards improve awareness in distributed operations. Further coverage addresses data collection and evaluation and new and emerging resources, particularly connecting real-time data to worker communication, control verification, maintenance triggers, and management of change.

M7L17 – Hazard Control for Gases, Vapors, and Solvents
A systematic review of hazard control for gases, vapors, and solvents starts with control of hazards and responsibility of health and safety personnel. Key learning areas include connecting control choice to toxicity, volatility, quantity used, flammability, and task frequency and reinforcing ethical responsibility to challenge inadequate controls and unsupported assumptions of safety. The remaining discussion addresses process controls and engineering controls, including including explosion-proof design where required, bonding and grounding, purge systems, and safe exhaust discharge. Attention then turns to personal protective equipment and drum / container opening precautions for volatile liquids, with examples including documenting abnormal findings, damaged containers, and escalation steps for bulging or leaking drums.

Module 8 - Particulates

M8L1 – Aerosols and Particulate Types I
A systematic review of aerosols and particulate types i starts with particulates and what are aerosols?. Key learning areas include defining particulates as solid or liquid particles suspended in air with workplace relevance across dusts, fibres, fumes, mists, smoke, and ultrafine aerosols and introducing how aerosols may act locally in the upper airways, in the deep lung, or systemically after absorption. Further coverage addresses dust and fibres, particularly why fibre toxicology depends on composition as well as dimensions and durability in tissue. It then considers fume and mist, including noting the very small initial particle size and subsequent agglomeration behaviour.

M8L2 – Aerosols and Particulate Types II
The learning begins with nanoparticles and smoke to establish the basis for aerosols and particulate types II. The material includes how tie nanoparticle control to precautionary risk management where toxicology or exposure limits are incomplete and explaining that smoke is a mixed exposure involving particulates plus gases such as carbon monoxide and carbon dioxide. Further coverage addresses aerosols and the workplace and chemical composition of the aerosol, particularly addressing mixed aerosols containing more than one hazardous component that require contaminant-specific analysis. It then considers particle size of aerosols, including distinguishing inhalable, thoracic, respirable, fine, and ultrafine fractions in practical occupational terms.

M8L3 – Particle Behavior and Filtration Mechanisms
Review the main elements of particle behavior and filtration mechanisms, starting with basic concepts, procedures, and examples and particle deposition mechanisms. Attention is given to emphasising that field interpretation should link aerosol physics to task observation and real-world work practices and relating deposition knowledge to biologically relevant sampling fractions. Further coverage addresses particle filtration mechanisms, impaction, and interception, particularly relating interception to fibrous filter media and deposition of fibre-like aerosols. It then considers sedimentation, diffusion (brownian motion), and electrostatic attraction, including showing relevance to low-velocity zones, storage areas, and poor housekeeping conditions.

M8L4 – Particle Size Distributions and Exposure Determinants
Analyse particle size distributions and exposure determinants by starting with critical factors in determining acceptable exposure. The content brings together explaining that workplace aerosols usually contain a distribution of particle sizes rather than a single size and framing acceptable exposure as a function of hazard, dose, deposition site, duration, frequency, and uncertainty. Further coverage addresses chemical and biological composition, crystalline, structural, and isotopic nature, and shape of the particles, particularly including isotopic considerations where radioactive particulates or tracer methods are relevant. It then considers size of the particles, dose: concentration of PM in the work environment and exposure duration, and preexisting health or genetic status of the worker, including tie size to control choice, including local exhaust design, enclosure, wet methods, and filtration. Additional focus is placed on concurrent exposure to other toxic agents, with attention to explaining additive, synergistic, or potentiating effects between particles and co- exposures such as gases, vapours, smoking, noise, and heat.

M8L5 – Biological Reactions to Particulate Exposure
Consider biological reactions to particulate exposure by first reviewing pneumoconiosis (updated discussion). These areas involve tracing inhaled particulate response from deposition and clearance to inflammation, tissue injury, repair, and possible fibrosis or cancer and including contemporary concern about accelerated silicosis and progressive massive fibrosis in high-exposure settings. Attention then turns to reversible vs progressive dust disease concepts, with examples including distinguishing transient irritation and reversible inflammatory syndromes from irreversible fibrotic disease.

M8L6 – Particulate Sampling Overview and Inhalable/Respirable Dust
The learning begins with sampling and analysis of particulate matter and sampling for particulate matter to establish the basis for particulate sampling overview and inhalable/respirable dust. The material includes defining the purpose of particulate sampling as estimating biologically relevant exposure for risk management and compliance and distinguishing gravimetric, microscopic, spectrometric, and contaminant-specific laboratory endpoints. Additional focus is placed on development of workplace aerosol monitoring and inhalable dust sampling, with attention to emphasising that settled surface contamination and process upset can materially change inhalable exposure. The remaining discussion addresses respirable dust sampling, including noting that PM metrics from direct-reading devices do not automatically equal standardized inhalable or respirable fractions without appropriate method understanding.

M8L7 – Silica, Coal Dust, and Direct-Reading Particulate Sampling
Consider silica, coal dust, and direct-reading particulate sampling by first reviewing silica dusts and coal mining dust. The material includes defining respirable crystalline silica and distinguish quartz, cristobalite, and tridymite where relevant to workplace interpretation and emphasising the historic and contemporary lesson that recurrence follows loss of vigilance. Further coverage addresses direct-reading devices, particularly explaining selection factors: particle size range, metric of interest, calibration aerosol, portability, and environment.

M8L8 – Microbiological, Radon, and Diesel Particulate Monitoring
Gain a focused overview of microbiological, radon, and diesel particulate monitoring, with initial attention to microbiological sampling and radon and radon progeny. The content brings together comparing impactors, impingers, filtration, and other bioaerosol samplers for viable and non-viable targets and including program elements: surveys, repeat testing, exposure management, and worker communication. The remaining discussion addresses diesel exhaust and diesel particulate matter, including reviewing exposure standards or surrogate approaches, including the practical use of elemental carbon in monitoring.

M8L9 – Size-Selective Sampling and Nanomaterials
Analyse size-selective sampling and nanomaterials by starting with size-selective particle sampling and analysis and engineered nanoparticles: key definitions, WHS regulatory framework, SDS and labelling. Attention is given to covering integrated mass-based sampling, particle counting, microscopy, and chemistry- based off-line analyses and including worker information and training on uncertainty, spill response, and waste handling. Further coverage addresses workplace exposure standards and hazardous properties of nanomaterials, particularly how size, shape, coating, solubility, and surface chemistry modify hazard. It then considers measuring nanomaterials and controlling exposure to nanomaterials, including using PPE and respiratory protection as part of a complete program, not as the primary control. Additional focus is placed on risk management for nanoparticles, with attention to requiring documentation, competency, and verification that controls remain effective over time.

M8L10 – Special Particulate Monitoring Methods
Analyse special particulate monitoring methods by starting with dual phase monitoring and isokinetic sampling. The discussion covers emphasising synchronized sampling, clear objectives, and integrated interpretation and defining isokinetic sampling as sampling at the same velocity as the process stream to avoid bias in particle collection. The remaining discussion addresses surface sampling for particulate matter and dermal monitoring, including clarifying that surface results complement, but do not replace, air monitoring. Attention then turns to nanoparticle-specific concerns, with examples including including contamination control for instruments, samplers, work surfaces, and sample handling to avoid artefact.

M8L11 – Analysis of Air Samples: Metals Overview
Explore analysis of air samples: metals overview through metals: major metals of concern in the workplace. Attention is given to defining the analytical pathway from field collection to validated laboratory result and exposure interpretation and noting that speciation can substantially change toxicity and control priorities. The content also examines metal toxicity and nature of metal contaminants and routes of exposure, with emphasis on distinguishing local respiratory effects from systemic absorption and biological accumulation. Further coverage addresses assessing exposure to metals in the workplace and methods of control, particularly considering mixed-metal environments, process variability, and need for biological monitoring for selected metals.

M8L12 – Toxic Metals in Workplace Particulates
A systematic review of toxic metals in workplace particulates starts with arsenic and cadmium. Key learning areas include addressing controls through substitution, enclosure, ventilation, hygiene, and contamination management and covering use and occurrence in batteries, plating, pigments, alloys, recycling, and thermal cutting of coated materials. It then considers chromium, lead, and mercury, including addressing controls with contamination containment, hygiene facilities, decontamination, medical removal protocols where required, and strict housekeeping. Additional focus is placed on nickel, zinc, and minor metals of workplace concern, with attention to addressing controls through source capture, process planning, and respiratory protection for peak tasks.

M8L13 – Free Crystalline Silica
Consider free crystalline silica by first reviewing definition, mineralogy, and forms and sources and occupational occurrence. The discussion covers why crystal structure and surface reactivity influence hazard and covering mining, quarrying, tunnelling, stone benchtops, foundries, concrete work, brick and tile manufacture, ceramics, refractories, and abrasive tasks. The content also examines toxicology and health effects and sampling and analysis, with emphasis on using respirable dust sampling with appropriate size-selective devices for health- relevant assessment. Further coverage addresses exposure limits, risk evaluation, and surveillance and control and program management, particularly prioritising elimination or substitution of high-silica processes where possible.

M8L14 – Asbestos
Understand asbestos through a connected review of public concern about asbestos and physical characteristics of asbestos. The material includes noting ongoing risk from legacy building materials, contaminated soils, imported products, and maintenance or demolition work and describing asbestos as a group of naturally occurring fibrous silicate minerals with strong, flexible, heat-resistant fibres. Attention then turns to sources and types of asbestos, health effects, and occurrence of asbestos in the workplace, with examples including identifying common types such as chrysotile, amosite, and crocidolite, plus other regulated asbestos minerals. The content also examines asbestos exposure risks, asbestos exposures in the workplace, and air sampling for asbestos, with emphasis on addressing asbestos removal planning, licensing, air monitoring, and clearance procedures.

M8L15 – Other Fibres, Particulate Analyses, and Direct-Reading Detectors
Explore other fibres, particulate analyses, and direct-reading detectors through man-made vitreous fibres and fume. The content brings together addressing safe handling, cleanup, ventilation, and appropriate respiratory protection where fibre release can occur and tie control to source capture, process change, consumable choice, and housekeeping. Further coverage addresses mists, radioactive particles, and gravimetric analysis, particularly defining airborne radioactive particulates in relation to NORM, process dusts, and specialized industrial or research work. It then considers biological organisms, organic particles, and direct reading particle detectors, including linking assessment to moisture control, cleaning, filtration, and source elimination.

M8L16 – Biological Monitoring and High-Efficiency Filtration
Explore biological monitoring and high-efficiency filtration through biological monitoring for individuals exposed to particulate matter and biological monitoring programme. Attention is given to distinguishing biological monitoring from health surveillance and from routine air monitoring and using recognized comparison values such as BEIs, BAT values, BLVs, or other applicable guidance when available. Further coverage addresses interpreting biological monitoring for particulate exposures and HEPA / ULPA filtration and very fine particle capture, particularly relating biomonitoring results to inhalation, dermal absorption, and ingestion pathways, especially for metals and mixed exposures. It then considers filtration physics, system design, and applications and inspection, testing, and program management, including distinguishing filtration used for engineering controls from respirator filter media used for personal protection.

Module 9

Module 9 - Industrial Noise

M9L1 – Sources of Law and the Legal Framework for Safety Practice
Coverage begins with why legal literacy matters for CSP practice, including key legal domains for CSP: tort/negligence, civil/criminal, contracts, disability terminology, OSHA enforcement/citations, together with how “legal risk” links to hazard/risk management decisions. Further coverage includes sources and hierarchy of law: constitutional, statutory, regulatory (administrative), and common law, together with federal vs state vs local jurisdiction (and why it matters in EHS). The next area is due process and the lifecycle of a legal issue, including complaint/allegation to investigation to enforcement/litigation to resolution, together with evidence basics: documentation, credibility, and defensibility. The final area is safety professional role boundaries, covering technical support vs legal advice (when to involve counsel), together with documentation discipline: facts, findings, and objective language.

M9L2 – Tort Law and Negligence: How Safety Failures Become Litigation
The discussion begins with tort law in the workplace context, covering personal injury/property damage and civil liability pathways, together with “Standard of care” and how it is established (policies, training, standards). Related discussion addresses negligence elements (claim anatomy), including duty of care, breach, causation (actual/proximate), damages, together with foreseeability and “reasonable person/professional” expectations. The next focus is common negligence scenarios in EHS, supported by failure to warn, failure to train, inadequate supervision, unsafe design/maintenance, together with contractor/visitor exposures and public-interface risks. The final focus is core defenses and risk controls (practical), addressing comparative/contributory negligence; assumption of risk (jurisdiction-dependent), together with prevention + documentation: inspections, corrective actions, competency records.

M9L3 – Beyond Negligence: Tort Theories and Litigation Outcomes
Core understanding of strict and product-related liability concepts is developed through strict liability vs negligence (what changes in proof), together with product liability basics: design, manufacturing, warning/labeling failures. The learning extends to organizational and managerial liability theories, with emphasis on vicarious liability (respondeat superior) and agency concepts, together with negligent hiring/retention/supervision and “failure to control” arguments. Further consideration is given to damages and remedy concepts, including compensatory vs punitive damages (what drives punitive exposure), together with settlement drivers: cost, uncertainty, reputational risk, corrective commitments. Learners also consider expert testimony and defensibility, including role of experts; avoiding overstatements and unsupported conclusions, together with preserving records and chain-of-custody for critical evidence.

M9L4 – Civil vs. Criminal Liability: Triggers and Consequences
The lesson establishes civil vs criminal-core differences for safety leaders by examining burden of proof, intent/mens rea concepts, and penalties, together with regulatory violations vs criminal charges (how escalation happens). Attention also turns to high-risk behaviors that create criminal exposure, examining falsification of safety records; obstruction; retaliation; knowing endangerment, together with “Willful” behavior indicators (knowledge + failure to act). Practical application focuses on compliance program elements that reduce exposure, with emphasis on internal reporting, corrective action systems, and leadership accountability, together with documenting good-faith efforts and timely hazard abatement.

M9L5 – OSHA Inspections: Preparation, Rights, and On-Site Control
Learners develop a practical understanding of inspection drivers and priorities, including imminent danger, catastrophes/fatalities, complaints, programmed inspections, follow-ups. The next focus is inspection structure and what to expect, supported by credentials, opening conference, walkaround, interviews/sampling, closing conference, together with typical records requested (training, programs, logs, procedures). Related discussion addresses employer and employee participation, including employer representative selection; employee representative participation during inspection, together with managing interviews and document production (need-to-know, accuracy, calm). Application and decision-making are reinforced through confidentiality considerations during inspections, including protection of trade secrets observed by compliance officers, together with marking/handling confidential materials and escort protocols.

M9L6 – OSHA Citations, Penalties, and Appeals: From Citation to Resolution
A clear foundation is built around citation issuance and posting/abatement fundamentals, with attention to citations issued by Area Director; posting requirements; abatement expectations. Further consideration is given to citation categories and penalty structure (exam-relevant), including other-than-serious, serious, willful, repeated, failure-to-abate; penalty concepts, together with good-faith/size/history adjustments and limits on reductions. The learning extends to informal conference and settlement strategies, with emphasis on informal meeting with Area Director; settlement agreements and revised terms, together with abatement verification, interim controls, and documentation packages. The closing discussion addresses appeals and contest process, covering notice of contest timeline; OSHRC independence; hearing/review options, together with petition for Modification of Abatement (PMAs): requirements and posting.

M9L7 – Confidentiality Fundamentals for Safety Data and Records
The content introduces what “confidential information” means in EHS through PII/PHI, business-sensitive data, proprietary processes, investigation materials, together with why confidentiality supports trust, reporting, and defensibility. It then explores information classification and access control, covering public / internal / confidential / restricted classification model, together with need-to-know, least privilege, and role-based access. Attention also turns to records lifecycle governance, examining creation to use to sharing to retention to secure disposal, together with legal hold triggers (litigation/regulatory action) and retention discipline. Practical application focuses on practical safeguards (baseline controls), with emphasis on secure storage, controlled distribution, version control, audit trails.

M9L8 – Medical and Exposure Information: Privacy Responsibilities
The discussion begins with PHI vs PII and common EHS examples, covering medical surveillance records, exposure monitoring, workers’ comp documentation, together with incident reports containing health details. Related discussion addresses HIPAA and workplace privacy (high-level orientation), including covered entities/business associates (why HIPAA may apply indirectly), together with minimum necessary sharing and authorization concepts. The next focus is handling injury/illness records and privacy-sensitive cases, supported by protecting confidentiality while meeting recordkeeping/reporting requirements, together with practical controls: redaction, restricted folders, limited distribution lists. The final focus is communication norms for sensitive information, addressing what to share with supervisors vs HR vs insurers vs counsel, together with avoiding informal disclosure (email, chats, whiteboards, toolboxes).

M9L9 – Trade Secrets and Confidential Business Information in EHS Practice
Core understanding of trade secrets/CBI-what they are in a safety context is developed through chemical identities, formulations, process conditions, proprietary controls, together with competitive harm and internal handling expectations. The learning extends to confidentiality in regulatory interactions, with emphasis on employer assurance of confidentiality of trade secrets observed during OSHA inspections, together with labeling/handling confidential submissions and managing regulator requests. Further consideration is given to hazard communication and trade secrets (program implications), including trade secrets/CBI considerations in hazard communication programs, together with balancing worker right-to-know with protected details (practical approaches). Learners also consider controls for sharing with third parties, including NDA use, contractor access limits, controlled site tours, clean-room rules.

M9L10 – Privacy Laws and Cybersecurity Controls for EHS Information
The lesson establishes privacy-law landscape relevant to safety records by examining GDPR concepts (lawful basis, minimization, purpose limitation, retention), together with cross-border data considerations for global operations. Attention also turns to digital security controls (EHS-specific), examining encryption, MFA, access logs, secure file transfer, device control, together with data loss prevention basics (preventing accidental sharing). It then explores incident response for data breaches, covering triage, containment, notifications (internal/external), documentation, together with post-incident corrective actions and lessons learned. The lecture concludes by examining vendor and system risk management, with attention to due diligence for EHS software and third-party administrators, together with contract clauses: confidentiality, breach notice, audit rights, data deletion.

M9L11 – Standards vs. Regulations: Due Diligence and Compliance Expectations
Learners develop a practical understanding of what standards are (and are not), including voluntary consensus standards vs mandatory regulatory requirements, together with when “voluntary” becomes “expected” (industry practice / contracts / courts). The next focus is standards as a component of the standard of care, supported by referenced standards in policies, procedures, training, and audits, together with using standards to justify controls and design decisions. Related discussion addresses key standards bodies and examples (safety-relevant), including ANSI, ISO, NFPA, ASTM, IEC and common EHS use cases. Application and decision-making are reinforced through common pitfalls, including treating guidance as mandatory (or ignoring mandatory references), together with using outdated editions; uncontrolled copies in the workplace.

M9L12 – How Standards Are Developed: Consensus, Due Process, and Updates
A clear foundation is built around consensus development model (high-level steps), with attention to proposal to committee drafting to public review/comment to revision to approval to publication. Further consideration is given to governance and integrity of the process, including balanced representation, transparency, documented resolution of comments, together with appeals mechanisms and handling of dissent. The learning extends to revision cycles and interpretations, with emphasis on periodic review, addenda, errata, interpretations/FAQs, together with harmonization across jurisdictions (ISO adoption, national deviations). The closing discussion addresses practical implications for safety pros, covering tracking changes; updating programs and training; change management.

M9L13 – Implementing Standards: From Selection to Audit-Ready Compliance
The content introduces selecting the right standard(s) through risk-based selection; applicability screening; scope boundaries, together with contractual/industry/customer-driven requirements. It then explores adoption vs adaptation, covering full adoption, “equivalency,” or alternate methods (and how to justify), together with documentation of rationale and validation evidence. Attention also turns to embedding standards into systems, examining procedures, competency, inspection/audit checklists, procurement specs, together with contractor requirements and verification methods. Practical application focuses on demonstrating conformance, with emphasis on audit evidence: records, observations, interviews, performance metrics, together with managing nonconformities and corrective action closure.

M9L14 – Ethics Foundations: Professional Responsibility Beyond Compliance
The discussion begins with ethics vs compliance, covering legal minimums vs ethical duties to prevent harm. Related discussion addresses core ethical principles for safety practice, including integrity, objectivity, fairness, respect, accountability, together with stakeholder lens: workers, public, employer, clients, regulators. Application and decision-making are reinforced through ethical risks unique to EHS roles, including pressure to minimize risk statements; “numbers management”; blame culture, together with dual-role tensions (safety vs production vs HR).

M9L15 – Ethical Decision-Making Models for Workplace Dilemmas
Core understanding of structured decision-making workflow is developed through clarify facts/uncertainties; identify stakeholders; define obligations, together with generate options; assess consequences and reversibility; select and document. The learning extends to applying recognized ethical tests (practical), with emphasis on transparency test, harm test, fairness test, professional integrity test. The closing discussion addresses escalation and documentation, covering when to elevate issues; how to document without speculation, together with building a defensible rationale aligned with values and policy.

M9L16 – Conflicts of Interest, Independence, and Data Integrity
The lesson establishes conflict of interest (COI) types in safety work by examining financial incentives, gifts, side consulting, vendor relationships, together with personal relationships and supervisory pressures. Attention also turns to maintaining independence in audits and investigations, examining scope clarity, impartial evidence collection, separating facts from opinions, together with handling management requests to “soften” conclusions. Practical application focuses on data ethics in metrics and reporting, with emphasis on leading/lagging indicator integrity; avoiding manipulation and selective reporting, together with correcting errors and reissuing reports (control and transparency).

M9L17 – Ethical Leadership, Culture, and Speaking Up
Learners develop a practical understanding of building an ethical safety culture, including “Tone at the top,” just culture, psychological safety for reporting. The next focus is whistleblowing and retaliation prevention (practice focus), supported by reporting channels, non-retaliation expectations, investigation integrity, together with protecting reporters’ confidentiality where feasible. The final focus is communication ethics during crises, addressing timely, accurate communication; avoiding premature blame, together with stakeholder updates and rumor control.

M9L18 – Competence, Professional Growth, and Ethical Use of Credentials
A clear foundation is built around practicing within competence, with attention to knowing limits; seeking expert help; avoiding overreach in specialized topics. Further consideration is given to continuous professional development (CPD), including CPD planning, learning documentation, reflective practice, lessons learned. Learners also consider ethical representation of qualifications, including accurate credential use; truthful claims about expertise and results, together with maintaining credibility through transparent limitations and assumptions.

M9L19 – Labor-Management Relations: Legal Foundations and Safety Roles
The content introduces why labor relations matter in safety outcomes through worker participation, trust, hazard reporting, and change acceptance. It then explores core labor relations concepts and structures, covering unions, bargaining units, stewards/representatives, management rights, together with mandatory vs permissive subjects of bargaining (safety-relevant overview). The lecture concludes by examining safety professional’s role in a represented workplace, with attention to collaboration with union reps; communication protocols; documentation discipline, together with avoiding actions that escalate conflict or create inconsistent messaging.

M9L20 – Collective Bargaining: Integrating Safety into Agreements
The discussion begins with safety and health provisions commonly negotiated, covering joint safety committees; training time; PPE; staffing; stop-work authority, together with incident investigation participation and information-sharing boundaries. Related discussion addresses designing effective joint safety committee charters, including scope, authority, meeting cadence, action tracking, escalation pathways. Application and decision-making are reinforced through practical negotiation support (for safety pros), including risk-based justifications; data-driven proposals; realistic implementation planning.

M9L21 – Grievances, Arbitration, and Collaborative Problem-Solving
Core understanding of grievance process fundamentals is developed through step progression, timelines, documentation expectations, together with typical safety triggers: discipline, work refusal, assignment disputes. The learning extends to arbitration basics (what safety pros should know), with emphasis on evidence preparation, credibility, consistency of practice. The closing discussion addresses collaboration strategies that reduce friction, covering interest-based problem solving, shared metrics, transparent corrective action follow-up, together with communication techniques for high-conflict issues.

M9L22 – BCSP Code of Ethics: Purpose, Scope, and Structure
The lesson establishes why the BCSP Code of Ethics exists by examining protect the public and strengthen professional trust. Attention also turns to who is bound and what “professional practice” includes, examining applicability to certificants; work products, communication, and representation. It then explores structure of the Code, covering ethical principles + standards of professional conduct (8 standards). The lecture concludes by examining using the Code as a decision tool, with attention to turning standards into “do/don’t” behaviors and documentation habits.

M9L23 – BCSP Code of Ethics: Standards 1–4 (Public Protection and Integrity)
Learners develop a practical understanding of standard 1-Public protection as the highest duty, including prioritizing safety, health, and welfare in decisions under pressure. The next focus is standard 2-Practice within accepted standards, supported by using appropriate methods; recognizing limits; seeking expert support. Related discussion addresses standard 3-Avoid misrepresentation, including credentials, findings, and communications must be accurate and complete. Application and decision-making are reinforced through standard 4-Maintain confidentiality appropriately, including protecting client/employer/employee information while meeting lawful obligations.

M9L24 – BCSP Code of Ethics: Standards 5–8 (Reporting, COI, and Fairness)
A clear foundation is built around standard 5-Issue truthful and objective reports, with attention to data integrity; clear assumptions; no suppression of material facts. Further consideration is given to standard 6-Avoid and disclose conflicts of interest, including identification, disclosure, recusal/controls, documentation. The learning extends to standard 7-Act free of bias and discrimination, with emphasis on fairness and respect in practice; avoiding prejudgment and unequal treatment. The closing discussion addresses standard 8-Expand awareness and professional competence, covering continuous improvement and public education responsibilities.

M9L25 – Ethics Complaints and Discipline: Applying the Code to Cases
The content introduces ethics accountability mechanisms through complaint pathways, investigation basics, confidentiality during reviews. It then explores disciplinary outcomes and professional consequences, covering sanctions spectrum (e.g., reprimand, suspension, revocation) and reporting expectations. Attention also turns to applying the Code to realistic dilemmas, examining pressure to alter findings; undisclosed COI; misuse of credentials; confidentiality conflicts. Practical application focuses on prevention practices, with emphasis on ethics “pre-briefs,” COI checklists, peer review, documentation standards.

M9L26 – Workers’ Compensation: Purpose, History, and the Grand Bargain
The discussion begins with why workers’ compensation exists, covering no-fault wage/medical benefits + employer protection from tort suits (exclusive remedy concept). Related discussion addresses core principles and system stakeholders, including employee, employer, insurer/TPA, medical providers, state agency/boards. The next focus is what WC is (and is not), supported by distinguishing WC from disability insurance, general liability, and OSHA enforcement. The final focus is safety professional leverage points, addressing prevention, timely reporting, investigation quality, and RTW coordination.

M9L27 – Workers’ Compensation Coverage: Compensability and Benefits
Core understanding of who is covered and common exemptions is developed through coverage rules and typical exempt categories (jurisdiction-dependent). The learning extends to what is compensable, with emphasis on injury-by-accident vs occupational disease; arising out of/in the course of employment. Further consideration is given to benefit types (high-level), including medical treatment, wage replacement, rehabilitation, survivor benefits. Learners also consider timing and payment concepts, including waiting periods and delayed benefits in some jurisdictions.

M9L28 – Claims Reporting, Investigation, and Case Management
The lesson establishes immediate response and reporting workflow by examining first aid/medical routing, supervisor notification, initial documentation checklist. Attention also turns to investigation practices that reduce cost and improve accuracy, examining facts, witnesses, conditions, causal analysis, corrective actions. It then explores case management interface, covering coordination with insurer/TPA; nurse case management; medical release handling. The lecture concludes by examining timeliness and cost impact, with attention to late reporting increases claim costs and complications.

M9L29 – Workers’ Compensation Costs: Premiums, EMR, and Risk Transfer Controls
Learners develop a practical understanding of how WC costs are generated, including frequency vs severity; medical vs indemnity; reserves; litigation involvement. The next focus is experience Modification Rate (EMR) fundamentals, supported by EMR purpose and what drives it (loss experience vs expected losses). Related discussion addresses cost control strategies safety can influence, including severity control via prevention; rapid triage; medical management alignment. Application and decision-making are reinforced through risk transfer and contract considerations, including certificates of insurance; additional insured vs WC; waiver of subrogation concepts, together with contractor loss control expectations and verification.

M9L30 – Return-to-Work, Light Duty, and Disability Accommodation Alignment
A clear foundation is built around why return-to-work (RTW) is a core WC strategy, with attention to cost containment, recovery support, engagement, and claim duration reduction. Further consideration is given to RTW program building blocks, including transitional duty design, job task bank, supervisor coaching, medical restrictions handling. The learning extends to coordinating with HR/disability management, with emphasis on ADA accommodation interface; essential functions; interactive process basics, together with avoiding confidentiality breaches while enabling safe placement. The closing discussion addresses measuring RTW effectiveness, covering duration, recurrence, sustainability, and supervisor compliance indicators.

M9L31 – Workers’ Compensation Program Governance: Fraud Prevention, Compliance, and Continuous Improvement
The content introduces fraud and abuse risk areas through employee, provider, and employer-side fraud indicators; controls and reporting paths. It then explores compliance and documentation discipline, covering consistent claim files, medical authorization tracking, and secure storage. Attention also turns to performance measurement and improvement, examining claims trend analysis, root cause themes, corrective action linkage to prevention. Practical application focuses on stakeholder coordination model, with emphasis on safety + HR + operations + insurer/TPA alignment, roles, cadence, and escalation paths.

Module 10 - Ionizing Radiation

M10L1 – Core Terms in Ionizing Radiation
The learning begins with its purpose, scope, and principal concepts to establish the basis for core terms in ionizing radiation. Key learning areas include introduction to Ionizing Radiation and linking terminology to worker communication, signage, permits, and incident documentation.

M10L2 – Types of Ionizing Radiation
A systematic review of types of ionizing radiation starts with its purpose, scope, and principal concepts. The material includes introduction to Types of Ionizing Radiation and stressing the role of source energy, beam quality, workload, collimation, and occupancy in exposure control.

M10L3 – Decay, LET, Range, and Direct vs Indirect Ionization
Review the main elements of decay, LET, range, and direct vs indirect ionization, starting with its purpose, scope, and principal concepts. The material includes radioactive Decay Calculations and tie indirect ionization to deep dose, scatter fields, skyshine, mixed-field monitoring, and shielding analysis.

M10L4 – Sources of Ionizing Radiation
Consider sources of ionizing radiation by first reviewing its purpose, scope, and principal concepts. Attention is given to introduction to Ionizing Radiation Sources and emphasising integrated control with industrial hygiene, ventilation, housekeeping, respiratory protection, and waste management.

M10L5 – Production of Radioactive Material and Contamination
A systematic review of production of radioactive material and contamination starts with its purpose, scope, and principal concepts. The material includes introduction to Production of Radioactive Material and integrating incident response expectations for spills, suspected uptake, chain-of-custody sampling, and documentation.

M10L6 – Biological Effects of Radiation
A systematic review of biological effects of radiation starts with its purpose, scope, and principal concepts. The discussion covers introduction to Biological Effects of Radiation and including medical follow-up, bioassay, decorporation interfaces, dose reconstruction, and worker counseling after suspected uptake.

M10L7 – Standards and Regulatory Guides
Consider standards and regulatory guides by first reviewing its purpose, scope, and principal concepts. These areas involve introduction to Standards and Guides and reinforcing documentation discipline for audits, inspections, corrective actions, and worker right-to-know obligations.

M10L8 – Radiation Monitoring Instruments: Personal Dosimetry
A systematic review of radiation monitoring instruments: personal dosimetry starts with its purpose, scope, and principal concepts. The material includes introduction to Monitoring Instruments and highlighting common errors: incorrect alarm settings, failure to verify energy response, and overreliance without passive backup where regulations require it.

M10L9 – Radiation Monitoring Instruments: Survey Meters, Calibration, and Bioassay
Analyse radiation monitoring instruments: survey meters, calibration, and bioassay by starting with its purpose, scope, and principal concepts. The content brings together ionization Chambers and Geiger-Mueller Counters and integrating bioassay with air monitoring, personal contamination surveys, and medical follow-up rather than treating it as a stand-alone tool.

M10L10 – Basic Radiation Safety Factors
Consider basic radiation safety factors by first reviewing its purpose, scope, and principal concepts. These areas involve introduction to Basic Safety Factors and connecting the law to survey interpretation, work permits, boundary setting, and remote operations planning.

M10L11 – Radiation Control Programs
Build a clear understanding of radiation control programs by considering its purpose, scope, and principal concepts. Attention is given to introduction to Control Programs and end with program review, auditing, competence maintenance, and specialist consultation for complex radiation problems.

Module 11 - Nonionizing Radiation

M11L1 – Foundations of Nonionizing Radiation and Electromagnetic Fields
Understand foundations of nonionizing radiation and electromagnetic fields through a connected review of electric fields. The discussion covers relating nonionizing radiation to occupational hygiene practice, worker health, and exposure control and noting worker concerns including surface charge effects, contact phenomena, and interference with devices. Further coverage addresses magnetic fields and electromagnetic radiation, particularly linking source characteristics to hazard assessment, measurement strategy, and control selection. It then considers electromagnetic spectrum and electric power transmission basics, including identifying where workers encounter stronger fields: substations, switchyards, rail systems, and large equipment. Additional focus is placed on nonionizing portions of the electromagnetic spectrum, with attention to linking each region with primary target tissues, principal effects, and broad control approaches.

M11L2 – When Fields Matter vs When Radiation Matters
A systematic review of when fields matter vs when radiation matters starts with when are fields important and when is radiation important? and parts of an electromagnetic device. The content brings together framing the practical question: what is the worker exposed to at the actual work position? and relating equipment design, maintenance condition, and access panels to exposure potential. The remaining discussion addresses near field versus far field and electric and magnetic field coupling, including relating coupling mechanisms to contact currents, induced currents, and interference with implants.

M11L3 – Subradiofrequency Fields Fundamentals
Consider subradiofrequency fields fundamentals by first reviewing subradiofrequency fields: 0-3,000 hz and field strengths. These areas involve identifying major source categories: transmission systems, electrified transport, welding, and industrial power systems and recognising task-based variability from load changes, switching operations, and body location. The remaining discussion addresses how do fields interact with the body? and direct current (DC) versus alternating current (AC), including explaining induced electric fields and current flow in tissue as key low-frequency interaction mechanisms. Attention then turns to electric power distribution concepts, with examples including connecting system layout to practical control measures such as separation distance, barriers, and work planning.

M11L4 – Biological Effects and Standards for Static Electric and Magnetic Fields
Gain a focused overview of biological effects and standards for static electric and magnetic fields, with initial attention to biological effects and standards for steady (DC) electric fields and biological effects and exposure standards for static magnetic fields. The discussion covers defining steady electric fields and common electrostatic and DC exposure situations and interpreting standards in terms of controlled areas, worker categories, and task restrictions. The remaining discussion addresses other safety concerns of static magnetic fields and MRI environments and special controls, including explaining the MRI suite as a special static magnetic field environment with additional RF and gradient hazards.

M11L5 – Time-Varying Subradiofrequency Fields and Tissue Interaction
Understand time-varying subradiofrequency fields and tissue interaction through a connected review of biological effects and exposure standards for time-varying subradiofrequency fields and induced current flow through tissue. Attention is given to relating exposure assessment to source frequency, waveform, duty cycle, and task pattern and distinguishing whole-body induction from localized current paths and contact currents. Further coverage addresses electrical stimulation of nerves and muscles and tissue heating as an interaction mechanism, particularly addressing implications for precision work, falls, and secondary injury risk.

M11L6 – Measuring Subradiofrequency Fields
The learning begins with measurement of electric fields to establish the basis for measuring subradiofrequency fields. These areas involve emphasising calibration, traceability, uncertainty, and documentation of operating conditions and distinguishing spot measurements, profile mapping, and area surveys around equipment and transmission sources. It then considers measurement of magnetic fields, including accounting for source variability, transient conditions, harmonics, and load-related changes.

M11L7 – Controls and Shielding
Examine the essential principles of controls and shielding, beginning with engineering controls for field sources. The content brings together using exposure characterization to match controls to field type, frequency range, and worker task and how increase separation distance and redesign layouts to reduce worker occupancy in higher field zones. The remaining discussion addresses administrative controls and safe work practices and shielding principles and limitations, including establishing controlled areas, access rules, exposure time limits, and contractor management procedures.

M11L8 – RF/Microwave Radiation Fundamentals
Develop a structured understanding of RF/microwave radiation fundamentals by examining radiofrequency/microwave radiation and fields (RF/MW) and industrial, scientific, and medical bands and frequency nomenclature. These areas involve identifying major occupational settings: telecommunications, broadcasting, RF sealing, diathermy, and radar and explaining common RF nomenclature, band naming, and wavelength-frequency relationships. Attention then turns to interactions of radiation and matter and near-field and far-field RF/MW considerations, with examples including introducing specific absorption rate, field strength, power density, and contact currents as core dosimetric concepts.

M11L9 – Biological Effects and Exposure Standards for RF Fields I
Examine the essential principles of biological effects and exposure standards for RF fields i, beginning with biological effects and exposure standards for radiofrequency fields and dosimetry. Key learning areas include introducing occupational exposure limits, basic restrictions, and reference levels for RF fields and defining specific absorption rate, incident power density, internal field distribution, and averaging mass. It then considers target organs and standard-setting rationale, including recognising the importance of uncertainty, conservatism, and trained-user assumptions in occupational limits.

M11L10 – Biological Effects and Exposure Standards for RF Fields II
Gain a focused overview of biological effects and exposure standards for RF fields II, with initial attention to averaging time and pulsed fields and regulatory considerations. The content brings together why time averaging is used to relate exposure to biologically relevant heating effects and requiring documented surveys, restricted access, maintenance controls, and incident investigation. Additional focus is placed on contact currents and induced body currents and whole-body versus localized exposure considerations, with attention to how conductive objects can create shock, burn, or startle hazards in RF environments.

M11L11 – Measuring RF Fields and Common RF Sources
A systematic review of measuring RF fields and common RF sources starts with measuring radiofrequency radiation and fields and video display terminals and microwave ovens. The material includes plan surveys around accessible areas, maintenance tasks, normal operation, and fault conditions and framing both examples as practical case studies in source identification and control verification. It then considers video display terminals and microwave ovens, including using leakage measurement and manufacturer instructions when evaluating suspect equipment.

M11L12 – RF/Microwave Controls
Develop a structured understanding of RF/microwave controls by examining RF/MW controls and engineering controls. These areas involve verifying controls through initial survey, periodic reassessment, and change management and using enclosure, waveguide integrity, interlocks, shielding, absorbing materials, and equipment maintenance. Further coverage addresses administrative controls and work practices and personal protective equipment and its limits, particularly training workers in field regions, safe approach distances, reflective hazards, and abnormal conditions.

M11L13 – Optical Radiation Basics
Review the main elements of optical radiation basics, starting with optical radiation and lasers and CIE bands. The material includes identifying major occupational sources: sunlight, welding arcs, lamps, furnaces, curing units, and lasers and explaining standard band divisions used in optical radiation practice and standards. The remaining discussion addresses ultraviolet radiation and visible radiation, including connecting visible radiation assessment to luminance, radiance, task viewing conditions, and visual behavior. Attention then turns to infrared radiation, with examples including relating IR hazard to source temperature, emission spectrum, and viewing geometry.

M11L14 – Biological Effects and Standards for Optical Radiation
Examine the essential principles of biological effects and standards for optical radiation, beginning with biological effects and exposure standards for optical radiation and the eye. The content brings together organize optical effects by wavelength band, target tissue, dose metric, and exposure duration and explaining wavelength-dependent injury to cornea, lens, and retina across UV, visible, and IR bands. It then considers the skin and standards, including emphasising correct selection of the applicable standard for the actual source and task. Additional focus is placed on controls for nonlaser sources, with attention to using enclosure, shielding, curtains, filters, and remote positioning to reduce exposure.

M11L15 – Lasers: Hazards, Standards, and Controls
Review the main elements of lasers: hazards, standards, and controls, starting with laser and biological damage mechanisms of lasers. Key learning areas include why beam geometry makes even small apertures and reflections significant and addressing direct beam, specular reflection, diffuse reflection, and alignment hazards. It then considers standards, controls, and laser pointers, including explaining maximum permissible exposure, nominal hazard zone, and labeling requirements. Additional focus is placed on nonbeam hazards of lasers, other regulatory concerns with lasers, and practical laser hazard evaluation concepts, with attention to integrating ventilation, electrical safety, and hazardous materials control with beam safety.

M11L16 – Measuring and Controlling Nonionizing Radiation
A systematic review of measuring and controlling nonionizing radiation starts with measuring optical radiation and measurement and control of nonionizing radiation. Key learning areas include selecting between photometers, radiometers, spectroradiometers, and band-specific instruments and emphasising documentation, traceability, and periodic reassessment after modifications. The remaining discussion addresses UVR and optical radiation, including measuring weighted irradiance or exposure using source-appropriate sensors and spectral information. Attention then turns to electric and magnetic fields and MRI, with examples including recognising when specialist MRI physicist or radiology safety input is required beyond routine occupational hygiene measures.

M11L17 – Lighting Fundamentals
Build a clear understanding of lighting fundamentals by considering lighting. Key learning areas include framing lighting as a controllable workplace design variable rather than a fixed background condition and introducing the interaction of daylight and electric lighting in real workplaces. Additional focus is placed on light and vision and information about light, with attention to addressing age-related visual needs and variation in worker capability. The remaining discussion addresses how light interacts with objects and the visible spectrum, including explaining reflection, absorption, transmission, diffusion, and specular reflection. Attention then turns to generation of visible light, with examples including relating source type to maintenance, flicker, color quality, and control strategies.

M11L18 – Lighting Devices, Units, and Measurement
The learning begins with light-producing devices and types of lamps and lighting to establish the basis for lighting devices, units, and measurement. The material includes considering robustness, warm-up time, dimming behavior, and maintenance implications and addressing daylight integration, emergency lighting, and lighting for hazardous or wet environments. The remaining discussion addresses terms and units of measurement (luminous flux, luminous intensity, illuminance (lighting level), luminance (brightness), reflectance, room index, mounting height, utilisation factor, light loss factor, contrast, glare, flicker) and measurement of light (periodic lighting surveys, new lighting installations, other lighting parameters), including addressing flicker and temporal light modulation as measurement and quality issues rather than simple brightness issues.

M11L19 – Lighting Quality, Ergonomics, and Biological Effects
Study lighting quality, ergonomics, and biological effects from the perspective of light source colour properties (correlated colour temperature, colour rendering index) and ergonomics of lighting. The material includes avoiding simplistic assumptions that cooler light is always better or that CRI alone defines lighting quality and using worker feedback together with measurements when refining the visual environment. Further coverage addresses biological effects of light, particularly integrating daylight, timing, spectral design, and nighttime lighting strategies without compromising safety or visual function.

M11L20 – Role of the Health and Safety Practitioner Regarding Radiation Hazards
The learning begins with role of the health and safety practitioner with regard to radiation hazards and understand the hazards to establish the basis for role of the health and safety practitioner regarding radiation hazards. The content brings together ensuring radiation hazards are addressed within the wider occupational hygiene management system and translating technical information into practical risk communication for supervisors and workers. It then considers identify significant sources and associated personnel and review existing controls against guidelines and standards, including including workers with implants, photosensitivity, or special medical considerations in exposure planning.

Module 12 - Thermal Stress

M12L1 – Fundamentals of Thermal Stress
Explore fundamentals of thermal stress through degrees of thermal stress. The content brings together defining thermal stress, heat strain, cold strain, and thermal comfort in occupational hygiene terms and relating severity to workload, clothing burden, exposure duration, and recovery opportunity. Further coverage addresses thermal stress continuum and comfort zone, particularly noting the influence of clothing, activity, season, and personal expectations on comfort. It then considers health-risk zones and limits of physiological adaptation, including emphasising that programme design must not rely on worker toughness or experience alone.

M12L2 – Thermal Balance and Acclimatization
Understand thermal balance and acclimatization through a connected review of model of thermal balance. Key learning areas include distinguishing heat balance from comfort perception alone and break down metabolic heat production, radiation, convection, conduction, and evaporation. It then considers factors affecting thermal balance and acclimatization, including covering air temperature, humidity, radiant heat, solar load, and air movement. Additional focus is placed on individual modifying factors and environmental modifying factors, with attention to addressing individual self-pacing, symptom recognition, and fitness-for-task considerations.

M12L3 – Heat Stress Recognition and Evaluation
Gain a focused overview of heat stress recognition and evaluation, with initial attention to recognition of heat stress. The material includes introducing the exposure-assessment sequence from screening to detailed evaluation and highlighting increased vulnerability in new, unacclimatized, medically compromised, and heavily protected workers. Further coverage addresses levels of heat-stress assessment and screening process and basic thermal risk assessment, particularly distinguishing screening-level assessment from basic thermal risk assessment. It then considers detailed assessment of hot working conditions and interpretation and decision-making, including documenting findings, communicate risk clearly, and trigger control implementation or medical review where needed.

M12L4 – Heat Stress Control
Develop a structured understanding of heat stress control by examining principles of heat stress control and engineering controls for heat stress. Attention is given to prioritising permanent design solutions for recurring hot work and how mechanize, isolate, or remotely operate high-burden tasks to reduce metabolic demand and time in hot zones. The content also examines administrative controls for heat stress and personal hygiene practices, with emphasis on maintaining skin hygiene to reduce rash, irritation, sweat retention, and secondary contamination. Further coverage addresses personal protective equipment and cooling aids and planning, preparation, and workforce development, particularly selecting PPE that controls the primary hazard with the least practical thermal burden. It then considers monitoring and heat stress management programme, including defining responsibilities, records, communication channels, and continuous- improvement actions.

M12L5 – Special Heat-Stress Factors
Analyse special heat-stress factors by starting with hot surfaces and hot air. The discussion covers controlling hot surfaces through insulation, guarding, shielding, cooldown periods, and tool redesign and recognising hot-air stratification, stagnant zones, and poorly ventilated plant areas. Additional focus is placed on respirators and combined effects of PPE and task demands, with attention to addressing hydration access, communication, fit, visibility, and task duration limits in hot work. The remaining discussion addresses assessment and control of special factors, including preparing for rapid deterioration in confined spaces, shutdown work, and emergency- response tasks.

M12L6 – Cold Stress Fundamentals
Explore cold stress fundamentals through model of thermal balance in the cold. Attention is given to distinguishing mild discomfort from local injury and whole-body hypothermia and relating work rate and movement to maintenance of body heat. The remaining discussion addresses measurement of cold stress and recognition of thermal comfort and excessive cold, including measuring air temperature, wind speed, humidity, surface contact, and wetness. Attention then turns to effect of cold on the human body and cold acclimatization and human limits, with examples including covering chilblains, frostnip, frostbite, trench foot, and immersion foot.

M12L7 – Cold Stress Evaluation and Control
Consider cold stress evaluation and control by first reviewing evaluation of cold stress and general controls and work capacity limits in cold environments. The discussion covers escalating assessment for remote work, immersion risk, night work, and medically vulnerable workers and setting work/warming schedules and proximity requirements for warming shelters. The remaining discussion addresses engineering controls and administrative controls, including using insulated tools, heated air, and anti-slip measures in cold environments. Attention then turns to specific controls and emergency response and programme management, with examples including establishing first-aid and evacuation procedures for frostbite and hypothermia.

M12L8 – Thermal Comfort and Performance
A systematic review of thermal comfort and performance starts with assessment of thermal comfort. The discussion covers relating thermal comfort to offices, control rooms, vehicles, clinics, laboratories, and mixed indoor-industrial spaces and using worker feedback, complaints, walkthroughs, and HVAC or ventilation review. Additional focus is placed on productivity and quality effects and accident risk in thermally uncomfortable environments, with attention to how discomfort slows task performance and reduces concentration. The remaining discussion addresses control of comfort and performance, including using commissioning, complaint-response systems, and trend review to prevent chronic performance loss.

M12L9 – Interaction of Heat with Other Toxic Hazards
Build a clear understanding of interaction of heat with other toxic hazards by considering interaction of elevated temperature with other toxic hazards and heat and dermal toxic hazards. Key learning areas include explaining that interaction may occur through increased uptake, altered tolerance, or reduced PPE effectiveness and how sweating, wet skin, and occlusive clothing increase contact time with contaminants. Further coverage addresses heat and inhalation hazards and heat with specific toxic and physical agents, particularly explaining that heat strain may mask early toxic symptoms or delay self-rescue decisions. It then considers evaluation of combined exposures and control strategy for heat–toxic hazard interactions, including training workers and supervisors to recognize overlapping symptoms and escalate early to medical evaluation or rescue.

Module 13 - Ergonomics

M13L1 – Foundations of Ergonomics
Build a clear understanding of foundations of ergonomics by considering goals of occupational ergonomics. The material includes scope across industrial, healthcare, office, transport, laboratory, and remote work and how reduce unnecessary physical and cognitive load on workers. The remaining discussion addresses ergonomics as the fit between worker, task, tools, and environment and core domains of ergonomics, including physical ergonomics: posture, manual handling, biomechanics, and workstation design. Attention then turns to ergonomics in industrial hygiene practice, with examples including recognising ergonomic hazards alongside chemical, physical, and biological hazards.

M13L2 – Matching the Person to the Task
Gain a focused overview of matching the person to the task, with initial attention to matching person and task and worker capability versus task demand. The material includes the purpose of fitting job demands to worker capabilities rather than forcing adaptation and task demand analysis: load, pace, frequency, precision, complexity, and environmental stressors. The content also examines dimensions of good fit and outcomes of good versus poor fit, with emphasis on how good fit improves safety, quality, comfort, learning, and operational reliability. Further coverage addresses practical approaches to improving fit, particularly eliminate unnecessary demands through redesign and mechanisation.

M13L3 – The Human as an Information Processor
A systematic review of the human as an information processor starts with human as information processor and the nervous system. The content brings together ergonomic design must account for limitations as well as capabilities and the relevance of neural processing speed, fatigue, and overload in work performance. Attention then turns to sensors and the “signal loop”, with examples including the importance of compatibility between signals, controls, displays, and expected operator action. The content also examines responding to stimuli, with emphasis on choice reaction time and movement time as design constraints.

M13L4 – Mental and Physical Work Capacity
Study mental and physical work capacity from the perspective of human capacity for work and properties of workload measures. The material includes human work capacity varies by age, fitness, health, experience, and environment and subjective measures may include perceived exertion, discomfort, and mental workload ratings. Additional focus is placed on human capacity for mental work and measuring mental workload, with attention to complexity, interruptions, multitasking, and poor interface design raise cognitive demand. The remaining discussion addresses human capacity for physical work and energy cost of work; classification of work; work/rest cycles, including how individual tolerance is strongly influenced by heat, hydration, PPE, and prior fatigue.

M13L5 – Fatigue and Work-Related Musculoskeletal Disorders
Review the main elements of fatigue and work-related musculoskeletal disorders, starting with fatigue and signs and symptoms of musculoskeletal injury. Key learning areas include recognising effects of long hours, night work, monotony, under-recovery, and overtime and warning features: nocturnal symptoms, persistent loss of function, reduced range of motion. The content also examines work-related musculoskeletal disorders (WMSDs) and mechanisms and risk factors, with emphasis on psychosocial contributors including low control, high demand, and poor reporting climate. Further coverage addresses surveillance and prevention, particularly supporting early intervention, graduated return to work, and evaluation of corrective actions.

M13L6 – Engineering Anthropometry Fundamentals
Understand engineering anthropometry fundamentals through a connected review of civilian body dimensions. The material includes the importance of using application-specific data rather than generic assumptions and variability by sex, age, ancestry, population, and secular trend. Further coverage addresses anthropometric statistics and determining percentiles, particularly using low percentiles for reach-dependent design and high percentiles for clearance- dependent design. It then considers data quality and application limits, including using 3D data and digital human modelling where helpful, but confirm with real task trials.

M13L7 – Anthropometry in Design
Understand anthropometry in design through a connected review of the phantom of the “average person” and designing to fit the human body. The discussion covers the average value for one body dimension does not represent a real average worker across all dimensions and combining anthropometry with task analysis, posture, force, and visual requirements. Additional focus is placed on population changes and anatomy and anthropometry as ergonomic design inputs, with attention to procurement decisions should be revisited when workforce composition changes. The remaining discussion addresses design validation, including documenting residual non-accommodation and any required administrative controls.

M13L8 – Biomechanics and Strength
Analyse biomechanics and strength by starting with body strength. Attention is given to how static and dynamic analyses are both relevant to occupational tasks and strength varies by muscle group, joint angle, posture, velocity, and sex. It then considers measuring body strength and model of strength generation, including how force production depends on neural activation, muscle cross-section, leverage, and coordination. Additional focus is placed on measuring techniques, with attention to using observational screening, video analysis, force gauges, and digital modelling where appropriate.

M13L9 – Manual Materials Handling Fundamentals
Understand manual materials handling fundamentals through a connected review of handling loads: lifting, lowering, pushing, pulling, carrying and seven keys of load handling. The discussion covers examining object, worker, path, and environmental contributors together and how improve handholds, path condition, visibility, and destination height. Further coverage addresses risk factors in manual handling and task assessment basics, particularly slopes, uneven floors, confined spaces, and poor lighting. It then considers training, including refresh training after incidents, process changes, equipment changes, or new staff assignment.

M13L10 – NIOSH Lifting Equation and Application
Consider NIOSH Lifting Equation and application by first reviewing using the equation. These areas involve the purpose of the Revised NIOSH Lifting Equation in estimating lifting demands and calculating the Lifting Index by comparing actual load to recommended load. Additional focus is placed on application of lifting guidelines to working conditions and interpreting results, with attention to how individual susceptibility, environmental factors, and one-handed or highly unstable lifts require added caution. The remaining discussion addresses practical limits and common misuse, including must be integrated with observation of posture, pace, worker variability, and incident history.

M13L11 – Design of Work Tasks and Workplaces
Develop a structured understanding of design of work tasks and workplaces by examining design of work task and workplace and human versus machine load handling. Attention is given to balance productivity, quality, maintainability, and worker health protection and using lift assists, conveyors, carts, hoists, positioners, and powered tools appropriately. It then considers rules for lifting; limits for lifting and lowering and limits for lifting, lowering, pushing, pulling, and carrying, including limit carrying distance by decentralising storage and using transport aids. Additional focus is placed on use of back belts; assessment and quantification of musculoskeletal risk; selection of ergonomic controls, with attention to prioritising elimination, mechanical assistance, layout change, and adjustability.

M13L12 – Hand Tools and Workstation Design
Develop a structured understanding of hand tools and workstation design by examining ergonomic principles for hand tool design. These areas involve how maintenance strongly influences ergonomic performance and required effort and how reduce contact stress, sharp edges, and local pressure points on the hand. Additional focus is placed on workstation design and general principles, with attention to minimise excessive reach, trunk flexion, neck flexion, and shoulder elevation. The remaining discussion addresses standing or sitting, including choose posture based on task mobility, force, precision, and duration.

M13L13 – Workplace and Computer Workstation Design I
Review the main elements of workplace and computer workstation design i, starting with workplace design and work space dimensions. Attention is given to begin with work task analysis, user population, equipment needs, and environmental conditions and defining reach zones, clearance envelopes, and movement space for the full task cycle. Attention then turns to office (computer) workstations; work task and positioning the body in relation to the computer, with examples including aligning keyboard and mouse to minimise shoulder abduction and wrist extension. The content also examines healthy work postures?, with emphasis on how seated posture should preserve back support, leg clearance, and relaxed shoulders.

M13L14 – Workplace and Computer Workstation Design II
The learning begins with designing for vision, manipulation, and body support and designing the sit-down workstation to establish the basis for workplace and computer workstation design II. The discussion covers providing readable displays, appropriate contrast, glare control, and task lighting and designing for change of posture and intermittent standing where possible. Further coverage addresses designing the stand-up workstation and designing the home office, particularly managing lighting, noise, temperature, and privacy in the home setting. It then considers fitting it all together; remote / distributed workstation considerations, including treating workstation setup as a systems issue involving equipment, environment, workload, and habits.

M13L15 – Controls and Displays
Examine the essential principles of controls and displays, beginning with control design principles. The discussion covers controls send commands; displays return information about status, process, or need for action and matching control sensitivity and force to the precision and urgency of the task. Further coverage addresses display design principles and light signals, particularly ensuring signals remain detectable in ambient light and line-of-sight constraints. It then considers labels, including labels should be clear, durable, visible, and task-relevant.

M13L16 – Cumulative Trauma Disorders: Causes and Risk Factors
Build a clear understanding of cumulative trauma disorders: causes and risk factors by considering avoiding cumulative trauma disorders and not a new problem; CTDs in industry; CTDs of keyboard users. Key learning areas include understanding that low-level repetitive exposures can still accumulate meaningful dose and how CTD risk increases when output pace and precision demands prevent recovery. Further coverage addresses what causes CTDs? and work factors that can cause CTDs, particularly early symptoms should be treated as exposure signals, not merely personal weakness. It then considers safe thresholds and exposure uncertainty, including how exact universal safe thresholds are difficult to define for many ergonomic stressors.

M13L17 – Cumulative Trauma Disorders: Injury Patterns and Examples
Study cumulative trauma disorders: injury patterns and examples from the perspective of cumulative injuries to the body and which body components are at risk for CTDs?. The discussion covers symptoms may begin intermittently and progress to persistent impairment and low back tissues in frequent handling, bending, and whole-body vibration exposure. Additional focus is placed on carpal tunnel syndrome and occupational activities and related CTDs, with attention to assembly, meat processing, healthcare handling, warehousing, and office work examples. The remaining discussion addresses case investigation and response, including using task history, symptom timing, job change history, and exposure mapping.

M13L18 – Ergonomic Countermeasures and Program Development
Explore ergonomic countermeasures and program development through safe thresholds and doses?; common musculoskeletal injuries and illnesses. The discussion covers applying elimination, substitution, mechanisation, redesign, and adjustability before training-only approaches and treating ergonomic exposure as a cumulative dose problem influenced by intensity and time. The content also examines methods for assessing ergonomic hazards and ergonomics program development, with emphasis on using worker interviews, observation, video, discomfort surveys, and task timing. Further coverage addresses training materials and workforce education, particularly refresh training whenever tasks, equipment, layout, or workforce profile changes.

Module 14 - Biological Hazards

M14L1 – Foundations of Biological Hazards and Biosafety
Examine the essential principles of foundations of biological hazards and biosafety, beginning with scope of biological hazards and core biological agents and hazard sources. Attention is given to differences between viable agents, non-viable fragments, and biologically derived chemicals and workplace reservoirs, hosts, vectors, and fomites. It then considers principles of biosafety and chain of infection and exposure pathways, including interruption of transmission through source, pathway, and receiver controls. Additional focus is placed on biosafety culture and professional conduct and workplaces where biosafety matters, with attention to beauty, tattoo, personal service, and community care settings with biological exposure potential.

M14L2 – Hazard Identification in Biological Exposures
The learning begins with microorganisms of occupational significance to establish the basis for hazard identification in biological exposures. The content brings together identification of routine, non-routine, maintenance, and emergency exposure scenarios and bacteria including Legionella, Mycobacterium tuberculosis, Brucella, and zoonotic agents. The remaining discussion addresses biohazardous materials not associated with infectious agents and exposure routes of biological agents, including how biological residues, decomposing matter, and sewage-related contaminants. Attention then turns to environmental and dermal exposure identification and infection, epidemiology, and potentially hazardous workplaces, with examples including difference between colonization, infection, communicable disease, and outbreak. The content also examines regulation of biological hazards, with emphasis on notifiable disease systems and reportable occupational infections.

M14L3 – Risk Assessment for Biological Hazards
A systematic review of risk assessment for biological hazards starts with factors affecting infection and exposure. The material includes using of qualitative, semi-quantitative, and task-based risk assessment methods and frequency, duration, and intensity of worker contact with hazardous material. Further coverage addresses other factors of biological hazards and route of exposure, particularly consequences ranging from transient irritation to severe disease, disability, or death. It then considers host susceptibility and task and process factors, including scale of work, concentration of agent, and likelihood of aerosol or splash generation. Additional focus is placed on risk evaluation and decision-making, with attention to determining when work can proceed, when controls must be upgraded, and when work stops.

M14L4 – Occupational Diseases Associated with Biological Hazards
Consider occupational diseases associated with biological hazards by first reviewing infectious disease. The discussion covers the importance of exposure history, task history, and outbreak context in diagnosis and concepts of incubation period, communicability, secondary transmission, and return to work. Further coverage addresses cancers and sensitisation and allergic diseases, particularly recognition of early warning symptoms and the need for rapid control. It then considers toxic and irritant diseases and differential diagnosis and occupational attribution, including distinguishing occupational from non-occupational disease using exposure history.

M14L5 – Hazard Classification, Risk Groups, and Biosafety Levels
Explore hazard classification, risk groups, and biosafety levels through hazard categories. Attention is given to infectious, allergenic, toxigenic, irritant, and carcinogenic biological hazard categories and how limits of risk groups when procedures or scale of work increase hazard. The content also examines biosafety levels and containment levels and matching risk groups to biosafety levels, with emphasis on why agent risk group does not automatically determine final containment needs. Further coverage addresses primary containment and specialized equipment and secondary containment and facility controls, particularly pressure differentials, pass-through systems, and high-containment facility requirements.

M14L6 – Occupational Exposure Standards and Hazard Control
Analyse occupational exposure standards and hazard control by starting with its purpose, scope, and principal concepts. These areas involve using of agent-specific, task-specific, and environmental performance criteria where no formal standard exists and applying the hierarchy of controls to biological hazards. The remaining discussion addresses containment: primary containment and containment: secondary containment, including ventilation and room controls for isolation, containment, and building protection. Attention then turns to administrative and work-practice controls and biosafety program management (basic rules of biosafety), with examples including emergency preparedness, spill response, communication, and continuous improvement.

M14L7 – Assessing Compliance in Biosafety
Gain a focused overview of assessing compliance in biosafety, with initial attention to use of audits to identify problem areas. The material includes need to assess both laboratory and non-laboratory biological risk settings and how identification of systemic causes rather than isolated blame. Further coverage addresses annual biosafety review and incident/accident statistics, particularly reviewing of risk assessments, SOPs, inventories, permits, and training currency. It then considers corrective action and verification and reporting, communication, and governance, including reassessment of risk after corrective action to confirm effectiveness.

M14L8 – Sampling and Analysis of Biological Hazards
Consider sampling and analysis of biological hazards by first reviewing protocol development. The discussion covers the importance of consulting the laboratory before finalizing the plan and defining the question, target agents, decision criteria, and intended use of results. Additional focus is placed on sample collection and analysis, with attention to using of blanks, field duplicates, calibration checks, and contamination control. The remaining discussion addresses quality control and interpretation and reporting, including recognition that detection does not always equal disease risk and non-detection does not prove absence.

M14L9 – Current Topics in Biosafety I
Understand current topics in biosafety i through a connected review of bloodborne pathogens. The material includes need to combine source control, pathway control, and worker protection and hepatitis B vaccination, post-exposure evaluation, and follow-up procedures. It then considers tuberculosis and bioterrorism, including the importance of preparedness exercises, continuity planning, and psychosocial risk management. Additional focus is placed on cross-cutting preparedness for high-consequence agents, with attention to the role of fit-tested respiratory protection, isolation, decontamination, and secure transport.

M14L10 – Current Topics in Biosafety II
A systematic review of current topics in biosafety II starts with legionellosis and building-related bioaerosol problems. The discussion covers water management programs, monitoring, corrective action, and vulnerable populations and remediation planning, isolation of work areas, verification, and re-occupancy criteria. It then considers biological hazards associated with noninfectious agents and other emerging biological-risk issues, including controlling through substitution, enclosure, ventilation, hygiene, and task redesign. Additional focus is placed on practical integration for IH and EHS programs, with attention to coordination between facilities, infection control, occupational health, and management.

M14L11 – Local and Global Disease Issues
Build a clear understanding of local and global disease issues by considering local disease issues. The content brings together why biological risk must be viewed across workplace, community, regional, and global scales and using of local surveillance data, notifiable disease lists, and public health alerts. The content also examines global disease issues and climate change, environment, and one health, with emphasis on implications for worker training, PPE planning, and sector-specific preparedness. Further coverage addresses surveillance, communication, and resilience, particularly occupational disease reporting, sentinel events, and cluster recognition.

M14L12 – Biosafety Regulations and Guidelines
Study biosafety regulations and guidelines from the perspective of regulations that affect laboratory biosafety practices. The discussion covers need to map applicable rules by sector, agent, process, and jurisdiction and occupational safety and health duties for risk assessment, training, PPE, and incident response. Attention then turns to guidelines for the safe use of pathogenic or oncogenic microorganisms (BMBL) and standard-setting or credentialing groups, with examples including how need to recognize BMBL as guidance that supports, but does not replace, regulation. The content also examines professional associations and applying regulations and guidance in practice, with emphasis on using of professional guidance to fill gaps where regulations are silent.

M14L13 – Role of IH and EHS Professionals in Biosafety
Gain a focused overview of role of IH and EHS professionals in biosafety, with initial attention to role of industrial hygienists and environmental health and safety professionals in biosafety and hazard recognition and risk assessment. The discussion covers need to bridge technical controls, program management, and regulatory compliance and identifying biological hazards across laboratory and non-laboratory environments. Attention then turns to exposure assessment and control and program implementation and compliance, with examples including evaluating decontamination, waste, sharps, laundry, and specimen transport systems. The content also examines training, communication, and worker support and incident response, ethics, and professional development, with emphasis on applying professional ethics, evidence-based practice, and proportional risk management.

Module 15 - Exposure Evaluation

M15L1 – Evaluation Fundamentals and General Principles
Consider evaluation fundamentals and general principles by first reviewing its purpose, scope, and principal concepts. The content brings together distinguishing initial evaluation, periodic re-evaluation, and event-driven re-evaluation and recognising that evaluation must consider source, pathway, receptor, and control reliability. The remaining discussion addresses basic approach to hazard recognition and inventory, including mapping inventories to locations, tasks, frequencies, quantities, and potential release scenarios. Attention then turns to review of existing records and background information and evaluation as a decision-making process, with examples including reviewing applicable OELs, internal standards, codes of practice, and regulatory requirements. The content also examines common errors and good practice, with emphasis on avoiding treating evaluation as a paperwork exercise detached from the real job.

M15L2 – Describing the Process or Operation I
Examine the essential principles of describing the process or operation i, beginning with description of process or operation and process flow sheet. Key learning areas include including normal production, start-up, shutdown, cleaning, maintenance, and waste handling and mark points of transfer, heating, mixing, spraying, cutting, weighing, and packaging. Further coverage addresses task and material characterization and checklists, particularly using area-specific checklists for production, storage, utilities, loading, laboratories, and waste areas. It then considers cleaning methods and exposure-relevant process details, including recording production rate, upset frequency, and seasonality as determinants of exposure. Additional focus is placed on documentation outputs, with attention to flag information gaps needing field confirmation or measurement.

M15L3 – Describing the Process or Operation II
Explore describing the process or operation II through process safety management and review of non-production areas. Attention is given to integrating exposure concerns with loss-of-containment, toxic release, fire, and explosion scenarios and evaluating maintenance shops, laboratories, warehouses, compressor rooms, utilities, and waste areas. The content also examines evaluation of potential fires, explosions, releases, and spills and written operating procedures, with emphasis on verifying procedures for start-up, normal operation, temporary operation, shutdown, and emergency shutdown. Further coverage addresses inspection and testing safety reviews and human factors and change, particularly verifying pre-startup safety reviews after changes, repairs, or new installations. It then considers common failure points, including inspection programs that verify paperwork but not real performance.

M15L4 – Field Survey and Walkthrough Evaluation
Examine the essential principles of field survey and walkthrough evaluation, beginning with sensory perception and following material flow. The discussion covers plan the survey to include representative shifts, tasks, and abnormal conditions where possible and using olfactory indicators cautiously, recognizing that odor is not a reliable measure of risk. Attention then turns to walk-through survey following material flow and control measures in use, with examples including verifying PPE selection, condition, compatibility, storage, maintenance, and actual use. The content also examines observation and interview and immediate findings and escalation, with emphasis on act promptly on obvious serious risks rather than waiting for the final report. Further coverage addresses survey records and common pitfalls, particularly avoiding overreliance on one short visit, one shift, or one worker account.

M15L5 – Monitoring and Sampling Foundations
Explore monitoring and sampling foundations through rationale. Attention is given to linking measurement strategy to the decision being made and providing defensible data for prioritization, communication, and regulatory response. Additional focus is placed on monitoring, sampling, and reasons for environmental measurement, with attention to providing warning of peak releases or unexpected process deviations. The remaining discussion addresses strategy design, monitoring as continuous observation, measurement, and judgment, and common errors and data quality, including do not ignore detection limits, interferences, or instrument response characteristics.

M15L6 – Industrial Hygiene Calculations
Build a clear understanding of industrial hygiene calculations by considering gases and vapors. Key learning areas include explaining the role of calculations in converting measurements into defensible exposure decisions and distinguishing gas concentration from vapor generation and volatilization rate. Additional focus is placed on vapor equivalents and weight-per-unit volume, with attention to converting between ppm and mg/m3 using molecular weight and reference conditions. The remaining discussion addresses time-weighted average (TWA) exposure and excursions, including calculating TWAs from multiple task periods and concentrations across the work shift. Attention then turns to applied calculations and common pitfalls, with examples including presenting calculations clearly enough that another hygienist can reproduce them.

M15L7 – Interpretation of Results
Analyse interpretation of results by starting with comparison with standards and guidelines. The content brings together framing interpretation as the integration of measurement data, exposure context, and decision criteria and distinguishing screening values, health-based limits, and regulatory limits. The content also examines limitations of standards and comparison of results with other data, with emphasis on explaining that OELs are not fine lines between safe and unsafe for every worker. Further coverage addresses assessment of control effectiveness and decision-making and communication, particularly communicating both findings and uncertainty in plain operational terms. It then considers common interpretation errors, including ignoring measurement uncertainty, censored data, or non-routine exposures.

M15L8 – Occupational Hygiene Statistics I
Review the main elements of occupational hygiene statistics i, starting with descriptive statistics. These areas involve why statistics are needed because exposures vary over time, by worker, and by task and why exposure data are often approximately lognormal. The content also examines inferential statistics and between/within worker variance, with emphasis on understanding why group compliance may hide individual overexposure. Further coverage addresses censored data and distributional assumptions and practical use, particularly checking whether the data are plausibly lognormal before applying common IH methods. It then considers common statistical pitfalls, including how using the geometric mean as if it were the average worker dose in all contexts.

M15L9 – Occupational Hygiene Statistics II
The learning begins with professional judgement and bayesian methods to establish the basis for occupational hygiene statistics II. Key learning areas include recognising cognitive bias, anchoring, and overconfidence in exposure assessment and explaining prior, likelihood, and posterior concepts in occupational hygiene terms. Further coverage addresses communication of results and associated risk and tools, particularly r package STAND for flexible analysis of non-detects and IH datasets. It then considers selecting and using statistical tools and integrating results into exposure decisions, including escalating when probabilities, uncertainties, or data gaps are inconsistent with acceptable risk. Additional focus is placed on common errors and limitations, with attention to ignoring the effect of changing tasks, controls, or production conditions on priors.

M15L10 – Compliance Decision-Making Strategy
Analyse compliance decision-making strategy by starting with a compliance decision-making strategy and what should constitute compliance?. The content brings together distinguishing compliance screening, compliance confirmation, and control verification and applying the correct rule for TWA, STEL, ceiling, peak, and task-specific limits. Attention then turns to other strategies for judging compliance against an OEL and simple methods, with examples including using a maximally exposed worker strategy only when the worst-case worker can be credibly identified. The content also examines advanced methods – group and individual compliance and compliance decision outcomes, with emphasis on using repeated measurements and variance analysis when within-worker and between- worker variation matter. Further coverage addresses documentation, reporting, and follow-up, particularly recording SEG definition, sampling rationale, methods, assumptions, calculations, and decision rule.

Module 16 - Air Sampling

M16L1 – Foundations and Types of Air Sampling
Develop a structured understanding of foundations and types of air sampling by examining purpose and scope of air sampling and personal versus area sampling. Attention is given to clarifying the limits of air sampling, including variability, uncertainty, and the need for professional judgment and defining area sampling as fixed-location or source-oriented measurement of workplace air. The content also examines grab versus integrated sampling and breathing-zone sampling, with emphasis on emphasising the need to document worker tasks, movement, and unusual events during sampling. Further coverage addresses strategic planning for air sampling, particularly identifying contaminants of concern from process knowledge, SDSs, emissions, by- products, and previous results.

M16L2 – Air-Sampling Instruments and the Sampling Train
Analyse air-sampling instruments and the sampling train by starting with the sampling train concept and suction pump. These areas involve emphasising that sampling method and analytical method are interdependent and describing the role of the suction pump in drawing a known volume of air through the sampling media. The remaining discussion addresses air inlet / orifice and sampling head and collection medium / device, including relating inlet choice to inhalable, thoracic, respirable, or whole-air sampling objectives. Attention then turns to connecting tubing and flow-measurement device and assembly, function checks, and deployment, with examples including explaining tubing requirements for chemical compatibility, low adsorption, flexibility, and crush resistance.

M16L3 – Collection Devices for Gases and Vapors I
Review the main elements of collection devices for gases and vapors i, starting with principles of gas and vapor collection and grab sampling methods. These areas involve relating method choice to whether the need is screening, compliance, source identification, or process control and explaining the value of grab samples for leaks, confined spaces, peak exposures, and troubleshooting. Attention then turns to integrated sampling by adsorption and integrated sampling by absorption, with examples including explaining solvent desorption and thermal desorption as common analytical recovery approaches. The content also examines breakthrough and capacity control, with emphasis on defining breakthrough as analyte passing through the collection medium before sampling ends.

M16L4 – Collection Devices for Gases and Vapors II
A systematic review of collection devices for gases and vapors II starts with passive monitors and their role and diffusion sampler operation. These areas involve distinguishing passive badges, diffusive tubes, and other badge-style monitors by geometry and target analyte and recording exposure time, temperature, barometric pressure, and other required field parameters. Additional focus is placed on benefits of diffusion samplers and factors affecting diffusion sampler accuracy, with attention to explaining reverse diffusion, backup section findings, and sampler capacity limits. The remaining discussion addresses appropriate use and common limitations, including using passive samplers only where validated methods, expected ranges, and conditions are suitable.

M16L5 – Collection Devices for Particulates I
Explore collection devices for particulates i through particulate sampling and filters. Attention is given to relating device selection to exposure limit basis and validated method requirements and selecting filter type based on gravimetric stability, chemical compatibility, pore structure, and analytical endpoint. It then considers cyclones and electrostatic precipitators, including matching cyclone model to required flow rate and target size convention. Additional focus is placed on device selection and practical application, with attention to avoiding errors caused by wrong flow, wrong media, wall loss neglect, and sampler overload.

M16L6 – Collection Devices for Particulates II
Gain a focused overview of collection devices for particulates II, with initial attention to inertial impactors and impingers. Attention is given to explaining inertial impaction as particle separation based on momentum and inability to follow airstream changes and describing impingers as devices that draw air into a liquid collection medium. The remaining discussion addresses elutriators and particle size ranges used in industrial hygiene, including defining elutriators as classifiers that separate particles by settling behavior in a controlled airstream. Attention then turns to sampling strategy based on particle size, with examples including selecting impactors or specialized instruments when size distribution or fraction-resolved data are needed.

M16L7 – Pumps and Flow-Rate Measurement
Analyse pumps and flow-rate measurement by starting with suction pumps and pump performance under field conditions. These areas involve classifying pumps as low-flow, medium-flow, high-flow, and specialty pumps based on sampling purpose and allow pumps to equilibrate to field conditions before calibration where necessary. Additional focus is placed on flow-rate meters and pressure-compensating devices, with attention to explaining pressure-compensating and constant-flow mechanisms that maintain target flow despite resistance changes. The remaining discussion addresses critical-flow orifice, including recognising common problems such as leaks, insufficient pressure differential, and fouling of the orifice.

M16L8 – Sampling Method Selection
The learning begins with principles of method selection and selection based on agent and process to establish the basis for sampling method selection. Attention is given to starting with the sampling objective: compliance, screening, diagnosis, control verification, or research and distinguishing methods for gases, vapors, dusts, fumes, mists, fibers, mixed-phase contaminants, and aerosols with reactive chemistry. Further coverage addresses personal sampling as the preferred estimate of worker exposure and choosing among active, passive, integrated, and direct-reading methods, particularly using area sampling only as a supplement when worker exposure cannot be inferred directly. It then considers practical constraints and quality requirements and contemporary method-selection issues, including reassessing the chosen method whenever processes, controls, or exposure limits change.

M16L9 – Primary Calibration Methods
Examine the essential principles of primary calibration methods, beginning with calibration fundamentals and primary calibration: spirometer. Key learning areas include perform calibration before use and verify after use to detect drift and emphasising its instructional value for understanding true volumetric calibration. The content also examines primary calibration: soap-bubble meter and calibration procedure and calculations, with emphasis on assemble the calibration train with the same media type or equivalent backpressure used in sampling. Further coverage addresses common errors in primary calibration, particularly do not accept calibration values from unverified built-in pump indicators as primary standards.

M16L10 – Secondary Calibration Methods
Analyse secondary calibration methods by starting with secondary calibration in occupational hygiene and secondary calibration: wet-test meter. The discussion covers placing secondary devices within a documented quality assurance system and describing the wet-test meter as a volumetric meter that measures airflow by displacement through a liquid-sealed mechanism. Attention then turns to secondary calibration: dry-gas meter and secondary calibration: precision rotameter, with examples including verifying rotameter readings regularly against a traceable standard before relying on them. The content also examines calibration parameters and current practice, with emphasis on evaluating repeatability, bias, and acceptance limits between pre- and post-sampling checks.

M16L11 – Sampling and Analytical Error
The learning begins with understanding total measurement error and sources of sampling error to establish the basis for sampling and analytical error. Key learning areas include relating measurement uncertainty to compliance decisions, risk interpretation, and re- sampling needs and considering storage degradation, transport loss, and field contamination as sampling- related errors. Attention then turns to sources of analytical error and quality assurance and quality control, with examples including maintaining chain of custody and proper sample sealing to preserve sample integrity. The content also examines interpreting results under uncertainty, with emphasis on communicating uncertainty clearly without overstating confidence or understating risk.

M16L12 – Recordkeeping and General Sampling Considerations
Study recordkeeping and general sampling considerations from the perspective of purpose of recordkeeping and minimum sampling documentation. The discussion covers how enable reconstruction of sampling conditions long after the survey is complete and recording worker identity or SEG, task description, location, date, shift, and sampling objective. It then considers sample handling, blanks, and chain of custody and general considerations for sampling airborne contaminants, including reassessing the plan when the process, work pattern, or conditions differ from expectations. Additional focus is placed on communication, retention, and program improvement, with attention to communicating results to management, workers, and other stakeholders in technically clear language.

Module 17 - Direct-Reading Instruments

M17L1 – Foundations of Direct-Reading Instruments
Review the main elements of foundations of direct-reading instruments, starting with role of direct-reading instruments in industrial hygiene and real-time and near real-time exposure assessment. Attention is given to defining direct-reading instruments for gases, vapors, and particulates and how short-duration peaks can be missed by integrated laboratory sampling alone. Additional focus is placed on core measurement concepts and hierarchy of direct-reading instruments, with attention to explaining when to use simple alarm devices versus more advanced analytical platforms. The remaining discussion addresses use in spill response and safe-zone establishment and strengths, limitations, and good practice, including integrating DRI findings with laboratory methods, professional judgment, and process knowledge.

M17L2 – Single-Compound and Group-Specific Monitors I
Explore single-compound and group-specific monitors i through purpose and selection of single-compound and group-specific monitors and combustible gas monitors. Attention is given to why these instruments are used where one hazard or one hazard family drives risk and explaining measurement in relation to lower explosive limit and fire or explosion prevention. Further coverage addresses oxygen monitors and carbon monoxide monitors, particularly why oxygen deficiency and oxygen enrichment are both dangerous. It then considers indoor air quality monitors and practical applications and common errors, including recognising cross-sensitivities, saturation, delayed sensor recovery, and poor warm-up practices.

M17L3 – Single-Compound and Group-Specific Monitors II
Examine the essential principles of single-compound and group-specific monitors II, beginning with other electrochemical and MOS-based monitors and electrochemical detector applications. These areas involve comparing these technologies in terms of selectivity, power demand, stability, and field practicality and explaining response based on electrochemical reaction proportional to gas concentration. Additional focus is placed on metal oxide semiconductor detector applications and mercury vapor monitors, with attention to explaining resistance change in a heated sensing element when target gases interact with the surface. The remaining discussion addresses formaldehyde vapor monitor and field interpretation and control follow-up, including addressing irritation-driven complaints, peak exposures, and need to confirm borderline results with validated methods.

M17L4 – Colorimetric Direct-Reading Devices
Analyse colorimetric direct-reading devices by starting with principles of colorimetric direct-reading tubes and badges and tube selection and correct field use. These areas involve explaining stain-length and color-intensity principles for gas and vapor indication and selecting tubes by analyte, range, environmental conditions, and potential interferences. Additional focus is placed on practical applications and other colorimetric direct-reading devices, with attention to comparing disposable single-use devices with reusable optical readers and automated stain systems. The remaining discussion addresses advantages of compound-specific monitors and limitations and sources of error, including recognising limited precision, human reading variability, and dependence on correct technique.

M17L5 – Broad-Range Monitors I
Review the main elements of broad-range monitors i, starting with biosensors. The discussion covers distinguishing screening instruments from confirmatory analytical instruments and examining strengths in specificity for targeted biologic interactions and emerging wearable formats. The content also examines nonspecific detectors and spectrophotometers and spectrometers, with emphasis on introducing PID, FID, NDIR, thermal conductivity, photoacoustic, and related broad- response technologies. Further coverage addresses exposure assessment applications and interpretation challenges, particularly guide the choice of follow-up sampling and laboratory confirmation.

M17L6 – Broad-Range Monitors II
Explore broad-range monitors II through surface acoustic wave detectors and multisensor arrays. The material includes using them for rapid screening, pattern recognition, and selected vapor-detection applications and addressing drift, recalibration, training-data quality, and algorithm dependence. Further coverage addresses gas chromatographs and portable gas chromatographs/mass spectrometers, particularly explaining chromatographic separation before detection as a route to better selectivity for mixtures. It then considers ion mobility spectrometer and comparative selection of advanced broad-range systems, including base selection on hazard uncertainty, response urgency, operator competence, budget, and logistics.

M17L7 – Particulate Direct-Reading Monitors
Study particulate direct-reading monitors from the perspective of scope of particulate monitoring and aerosol behavior and measurement principles. Attention is given to connecting monitoring objectives to compliance support, control evaluation, and source characterization and relating deposition and health risk to aerodynamic diameter and particle fraction. Additional focus is placed on major types of particulate direct-reading monitors and workplace applications, with attention to introducing other real-time or near-real-time systems such as tapered element microbalance and black-carbon or elemental-carbon instruments where relevant. The remaining discussion addresses calibration, correction factors, and gravimetric linkage and interpretation, controls, and pitfalls, including considering humidity, vibration, dirty optics, flow faults, and size-preselector performance.

M17L8 – Calibration and Performance Evaluation
Review the main elements of calibration and performance evaluation, starting with purpose of calibration and performance evaluation and full calibration and functional calibration / instrument check. Key learning areas include why credible DRI data depend on calibration, verification, and documented performance and perform pre-use checks, post-event checks, and additional calibrations after failed bump tests, repairs, sensor changes, or harsh exposure. It then considers core performance specifications and cross-sensitivity, interferences, and environmental effects, including reviewing stability, drift, linearity, precision, bias, and overall uncertainty. Additional focus is placed on electromagnetic susceptibility and ruggedness and quality assurance, records, and acceptance criteria, with attention to remove instruments from service promptly when they cannot be zeroed, calibrated, or trusted.

M17L9 – Complexity, Cost, Training, and Portability
Gain a focused overview of complexity, cost, training, and portability, with initial attention to understanding the tradeoffs and complexity versus information yield. The discussion covers explaining that no single DRI is best for all hazards, tasks, and decision needs and comparing simple single-gas alarms with multisensor systems and advanced field analyzers. Attention then turns to cost considerations and training and competency requirements, with examples including including purchase price, calibration gases, consumables, maintenance, sensor replacement, and software. The content also examines portability and field practicality and selection framework for professional practice, with emphasis on reassessing the instrument choice whenever process conditions, hazards, or operational objectives change. Further coverage addresses common procurement and implementation pitfalls, particularly failing to integrate the instrument into written procedures, emergency plans, and control verification programs.

Module 18 - Methods of Control

M18L1 – Foundations of Methods of Control
A systematic review of foundations of methods of control starts with primary control categories. The material includes source–pathway–worker model for understanding where controls act and personal protective equipment as the last line of defence, not the primary design solution. It then considers control in the occupational exposure risk management process and traditional industrial settings versus nontraditional workplaces, including controlling challenges in mining, manufacturing, laboratories, foundries, construction, and process plants. Additional focus is placed on foundational principles for good control practice, with attention to defining verification, maintenance, documentation, and review requirements from the outset.

M18L2 – Applying the Hierarchy of Controls
Study applying the hierarchy of controls from the perspective of application of the hierarchy of controls and anticipation and recognition of health hazards. These areas involve situations requiring layered controls rather than a single intervention and using SDS, equipment manuals, incident history, worker interviews, and walkthrough surveys. Further coverage addresses evaluation and prioritisation of health hazards and choosing controls within the hierarchy, particularly how testing whether elimination is feasible before considering lower-order controls. It then considers practical decision-making in real workplaces, including recording control decisions, assumptions, residual risk, and follow-up actions.

M18L3 – Control Strategy Design, Verification, and Review
Analyse control strategy design, verification, and review by starting with design and implementation of a control strategy and considerations of cost versus benefit. The content brings together defining the hazard, exposure scenario, workers at risk, and target performance outcomes and distinguishing capital cost from life-cycle cost, maintenance cost, and health cost. The remaining discussion addresses application of the hierarchy of control at the design stage and validate and verify effectiveness of the control strategy, including comparing actual performance against design intent, exposure targets, and operating limits. Attention then turns to periodic review of the control strategy, with examples including reviewing controls after incidents, complaints, process changes, maintenance, or monitoring trends.

M18L4 – Control of Chemical Hazards and Control Banding
Review the main elements of control of chemical hazards and control banding, starting with regulatory requirements for the management of hazardous chemicals. Key learning areas include differences in control needs for gases, vapours, dusts, fumes, mists, fibres, liquids, and nanomaterials and health monitoring and recordkeeping for specified hazardous chemicals and tasks. Further coverage addresses core chemical control measures and control banding, particularly how understanding when control banding is useful and when it must not replace professional exposure assessment. It then considers limits and good use of control banding and chemical control program implementation, including integrating procurement controls, change management, emergency planning, and contractor management.

M18L5 – Engineering Controls at the Design Stage I
The learning begins with engineering controls at design stage and design to establish the basis for engineering controls at the design stage i. These areas involve considering normal operations, upset conditions, maintenance, and cleaning from the beginning and considering airflow patterns, make-up air, negative or positive pressure needs, and recirculation risk. The remaining discussion addresses maintenance considerations and design specifications, including preventing maintenance tasks from becoming the highest-exposure part of the job. Attention then turns to reliability and performance assurance, with examples including designing for fail-safe operation and clear indication of system status.

M18L6 – Engineering Controls at the Design Stage II
Explore engineering controls at the design stage II through hazardous materials and closed systems. The material includes considering process chemistry, decomposition products, and residual contamination hazards and controlling access to enclosed systems during startup, shutdown, and upset conditions. The content also examines automation to reduce worker contact and design for cleaning and maintenance, with emphasis on writing maintenance methods that preserve containment and prevent secondary exposure. Further coverage addresses prevention and detection of unplanned releases and siting and layout for exposure control, particularly planning emergency ventilation, evacuation routes, and incident command interfaces.

M18L7 – Engineering Controls at the Design Stage III
Build a clear understanding of engineering controls at the design stage III by considering moisture-control and HVAC design considerations and fresh-air intake location and re-entrained contaminant avoidance. Key learning areas include preventing stagnant water in coils, pans, humidifiers, and associated pipework and preventing re-entrainment of process emissions and nuisance odours into occupied areas. It then considers special filtration / special-use ventilation needs and commissioning, balancing, and maintenance, including testing and balancing airflow to confirm design intent before occupancy or production startup. Additional focus is placed on common HVAC and moisture-control failures, with attention to demand-control or energy-saving changes that unintentionally degrade exposure control.

M18L8 – Industrial Hygiene Control Methods
Examine the essential principles of industrial hygiene control methods, beginning with engineering controls. These areas involve integrating exposure assessment results into control selection and sequencing and physical barriers, shields, acoustic treatments, and machine modifications for physical hazards. Attention then turns to administrative controls and personal protective equipment, with examples including how training and behaviour reinforcement to support higher-order controls rather than replace them. The content also examines special control methods, with emphasis on shielding, isolation rooms, biosafety cabinets, alarmed monitoring, and remote sensing.

M18L9 – Principles of Engineering Controls
Examine the essential principles of principles of engineering controls, beginning with substitution: changing the material. The content brings together how reliable controls are simple, robust, inspectable, and suited to the process and considering substitution effects on reactivity, waste generation, product quality, and downstream tasks. It then considers substitution: changing the process and isolation, including replacing open processes with enclosed or lower-emission process designs. Additional focus is placed on ventilation and engineering control performance and pitfalls, with attention to understanding hood design, capture zone, duct transport, fan selection, and discharge location.

M18L10 – Administrative Controls
Analyse administrative controls by starting with reduction of work periods. Attention is given to how their effectiveness depends heavily on clarity, consistency, supervision, and worker understanding and limiting time spent in high-exposure zones through scheduling and task rotation. The remaining discussion addresses wet methods and personal hygiene, including how using wet suppression to reduce dust generation during cutting, drilling, crushing, and cleanup. Attention then turns to housekeeping and maintenance provisions and emergency response training and education, with examples including ensuring contractors and temporary workers understand site-specific emergency procedures.

M18L11 – Special Control Methods
Develop a structured understanding of special control methods by examining shielding. The discussion covers how selection depends on hazard type, exposure pathway, detectability, and speed of onset and shielding principles for ionising radiation, non-ionising radiation, lasers, bright light, and thermal sources. It then considers shielding applications in occupational hygiene and continuous monitoring with preset alarms, including acoustic enclosures, barriers, and damping treatments for noise control. Additional focus is placed on alarm system reliability and human factors and limits of special control methods, with attention to maintaining records of alarm events, responses, corrective actions, and verification testing.

M18L12 – Waste Disposal
Develop a structured understanding of waste disposal by examining waste treatment and disposal. The discussion covers classifying waste according to chemical, biological, radiological, sharps, or mixed- hazard properties and using appropriate containers, labelling, storage times, and secure accumulation areas. Further coverage addresses worker protection during waste handling and cradle-to-grave responsibility concepts, particularly preventing sharps injuries, aerosolisation, splash exposure, and drum-handling incidents. It then considers special waste streams and program management and review, including how using waste data to support substitution, process redesign, and improved housekeeping.

M18L13 – Personal Protective Equipment as a Control Method
Study personal protective equipment as a control method from the perspective of respiratory protective devices. The material includes need to avoid both underprotection and overprotection and selection by contaminant type, concentration, oxygen status, task demands, and assigned protection level. The content also examines protective clothing and eye and face protection, with emphasis on maintaining visibility through cleaning, replacement of scratched lenses, and anti-fog measures. Further coverage addresses hearing protection and PPE program management, particularly keeping records of issue, fit testing, training, maintenance, and medical clearance where required.

M18L14 – Education, Training, and Health Surveillance
Build a clear understanding of education, training, and health surveillance by considering education and training and hazard-specific training. Key learning areas include how emphasising that training supports but does not replace higher-order controls and checking competence through observation, drills, fit testing, and supervised task performance. Additional focus is placed on emergency procedures training and health surveillance, with attention to training workers to respond to spills, gas releases, fires, exposure incidents, medical emergencies, and evacuation. The remaining discussion addresses health surveillance methods and program design and ethics, records, and follow-up, including keeping records, schedules, and action tracking systems for surveillance findings.

Module 19 - Local Exhaust Ventilation

M19L1 – Foundations of Local Exhaust Ventilation
Gain a focused overview of foundations of local exhaust ventilation, with initial attention to basic science of ventilation. The content brings together how situations where LEV is preferred over dilution because contaminants are toxic, dusty, hot, variable, or generated close to workers and air moves only when a pressure difference exists between two points. Additional focus is placed on volume of air within a system and flow of air within ducts, with attention to consequences of underflow and overflow, including poor capture, wasted energy, and noise. The remaining discussion addresses factors affecting airflow and design basis and professional practice, including how worker movement, process variability, and changing task geometry as operational influences on capture.

M19L2 – Principles and Myths of LEV
Consider principles and myths of LEV by first reviewing moving contaminated air away from the breathing zone. The discussion covers how field verification is essential because intuitive judgments about airflow are frequently wrong and clean air should enter from behind or beside the worker and sweep contaminants toward extraction. Additional focus is placed on eddies around downwind objects and extracting versus blowing, with attention to extraction generally gives more reliable contaminant control than blowing because it removes contaminants from the workplace. The remaining discussion addresses the “heavier than air” myth and practical implications for LEV design, including dense gases can still mix rapidly with room air, especially near moving equipment and workers.

M19L3 – Local Exhaust System Components I: Hoods
Build a clear understanding of local exhaust system components i: hoods by considering hood design requirements and capture fundamentals. These areas involve poor hood design cannot be compensated for reliably by simply increasing fan power and placing the hood as close as possible to the source, preferably within the effective capture zone. Additional focus is placed on capturing hoods and enclosing hoods and receiving hoods, slot hoods, and canopy hoods, with attention to how enclosing hoods are preferred for high-toxicity, dusty, or variable processes whenever process access allows. The remaining discussion addresses push-pull ventilation and other air-assisted hoods and fume cupboards, including how these systems demand commissioning and verification because they are sensitive to setup errors. Attention then turns to hand tools with LEV, with examples including how it is especially important for silica, wood dust, metal dust, and other high-risk particulate processes.

M19L4 – Local Exhaust System Components II: Ducts, Fans, and Air Cleaning
Study local exhaust system components II: ducts, fans, and air cleaning from the perspective of duct design and friction losses and turbulence, direction changes, and flexible lightweight duct concerns. The discussion covers how cleanout ports and inspection access are needed where particulate deposition, corrosion, or condensation may occur and how unsupported or coiled flexible sections can cause major hidden resistance and unstable flow. Additional focus is placed on fans and fan performance and fan selection, curves, and common problems, with attention to fans must provide the required flow while overcoming total system resistance. The remaining discussion addresses particulate air-cleaning devices and gas and vapor removal devices, including how adsorption relies on sorbents such as activated carbon and requires breakthrough management. Attention then turns to system integration and process safety, with examples including how mixed contaminant streams may create fire, explosion, corrosion, or chemical reaction hazards in shared ducts.

M19L5 – Local Exhaust System Components III: Makeup Air and Exhaust Stacks
Review the main elements of local exhaust system components III: makeup air and exhaust stacks, starting with makeup air fundamentals and features of an effective make-up air system. Attention is given to how poor makeup air design is a frequent hidden cause of LEV failure and temperature conditioning may be needed to maintain comfort and avoid disabling the system in extreme weather. The content also examines exhaust stack principles and re-entry mechanisms and wind effects, with emphasis on stack design should be treated as part of exposure control, not merely as a final disposal detail. Further coverage addresses use of wind roses and dispersion planning and common problems with makeup air and stacks, particularly short stacks with low exit momentum and high re-entrainment risk. It then considers operational and compliance considerations, including how recirculation should only occur where contaminant removal is demonstrably effective and health risk is controlled.

M19L6 – Airflow and Pressure Principles
A systematic review of airflow and pressure principles starts with airflow principles. These areas involve how pressure concepts explain why air moves, where flow is lost, and why “more suction” is an incomplete explanation and air moves from higher to lower pressure unless assisted by fans or density differences. Additional focus is placed on pressure concepts and negative pressure and suction concepts, with attention to how practical understanding of these distinctions is critical for leak location, fan placement, and maintenance planning. The remaining discussion addresses pressure losses and system resistance and field interpretation of airflow and pressure, including pressure data become far more useful when linked to commissioning reports and operating specifications. Attention then turns to design and teaching implications, with examples including students should be able to explain system behavior qualitatively before applying equations.

M19L7 – LEV Performance Evaluation and Improvement
Build a clear understanding of LEV performance evaluation and improvement by considering smoke tube tests. The content brings together a complete assessment combines observation, measurement, and understanding of the task and smoke tubes provide rapid visualization of airflow direction, capture range, dead zones, and reverse flow. Attention then turns to velocity measurements and static pressure measurements, with examples including measurements must be taken at representative points and under normal operating conditions. The content also examines troubleshooting common LEV problems and improvement strategies, with emphasis on using follow-up exposure assessment to confirm that engineering improvements actually reduce worker exposure. Further coverage addresses program management and documentation, particularly training users to recognize visible signs of reduced performance and report them promptly.

M19L8 – Measurement and Operating Considerations
Gain a focused overview of measurement and operating considerations, with initial attention to face velocity. Attention is given to instrument selection should reflect contaminant type, airflow pattern, temperature, and measurement objective and face velocity should therefore be paired with smoke testing, containment evaluation, and user observation. It then considers flow, traverse, and baseline measurements and hot processes: key considerations, including how worker exposure can increase if replacement air pulls hot contaminants across the face. Additional focus is placed on hot processes: measurement and instrument limitations and operating factors that affect performance, with attention to how high-temperature processes may require specialized high-temperature anemometers and heat-tolerant methods. The remaining discussion addresses modern monitoring and decision support, including operating data should feed back into exposure assessment, troubleshooting, and worker training.

M19L9 – Noise Control in Ventilation Systems
Consider noise control in ventilation systems by first reviewing common noise problems. Key learning areas include noise control should be integrated with airflow, pressure, and maintenance planning and how duct vibration can radiate sound and make roofs, walls, or supports act like loudspeakers. The remaining discussion addresses relationship between airflow design and noise and engineering fixes, including how poor balancing and unstable operating points can increase both noise and vibration. Attention then turns to maintenance and troubleshooting and worker protection and program implications, with examples including noise changes can be an early indicator of mechanical or aerodynamic problems.

Module 20 - Dilution Ventilation of Industrial Workplaces

M20L1 – Foundations of Dilution Ventilation
A systematic review of foundations of dilution ventilation starts with purpose and scope of dilution ventilation and distinguishing dilution ventilation from building HVAC / general ventilation. Attention is given to clarifying that dilution ventilation is an engineering control, not merely a comfort feature and identifying when building ventilation can support, but not replace, dedicated industrial hygiene control. Further coverage addresses the dispersion-and-removal concept and basic airflow and contaminant behaviour, particularly addressing source momentum, release height, and whether emissions are continuous, intermittent, or batch generated. It then considers exposure and performance concepts and strengths, limitations, and common myths, including why “air movement” alone does not equal exposure control.

M20L2 – Dilution Ventilation Systems
A systematic review of dilution ventilation systems starts with categories of dilution ventilation systems and natural ventilation. The discussion covers explaining positive, negative, and near-neutral room pressure strategies and emphasising limitations from calm conditions, variable weather, lack of filtration, and poor predictability. The remaining discussion addresses mechanical ventilation and air movement through the zone of contaminant release, including considering racks, partitions, machinery wakes, and partial enclosures that distort intended flow paths. Attention then turns to make-up air, recirculation, and pressure relationships and operation, reliability, and maintenance, with examples including explaining that exhaust performance depends on adequate replacement air.

M20L3 – Applications and Limitations of Dilution Ventilation
Develop a structured understanding of applications and limitations of dilution ventilation by examining appropriate applications and core limitations. Key learning areas include applying it to temporary recovery and purge situations when supported by monitoring and safe systems of work and do not rely on dilution ventilation for highly toxic, highly variable, or near-worker point-source emissions. The remaining discussion addresses choosing dilution ventilation versus local exhaust and confined spaces, including escalating to enclosure or LEV when dilution airflow becomes excessive or uncertain. Attention then turns to thermal displacement ventilation (TDV): use and TDV: limitations, with examples including describing TDV as low-level, low-velocity supply with upward removal driven by thermal plumes.

M20L4 – Dilution System Design Considerations
Consider dilution system design considerations by first reviewing defining the design basis and safety factors. These areas involve establishing assumptions, uncertainties, and acceptance criteria before selecting airflow and revisiting safety factors after monitoring confirms whether assumptions were conservative enough. Attention then turns to dilution ventilation system layout and contaminant mixing and circulation, with examples including identifying stagnant zones, eddies, remote corners, pits, and upper-level accumulation zones. The content also examines worker-location considerations and integration with programs and procedures, with emphasis on including non-routine worker positions such as inspectors, cleaners, and maintenance personnel.

M20L5 – Calculating Dilution Airflow for Health Protection
Explore calculating dilution airflow for health protection through calculation framework and dilution ventilation for health: steady-state. The discussion covers starting with the health objective: maintain exposure below the relevant occupational exposure limit with practical margin and including incomplete mixing by applying a mixing factor or equivalent ventilation- effectiveness allowance. Additional focus is placed on dilution ventilation for health: purging and dilution airflow design data, with attention to using decay calculations to estimate time required to reduce concentration after a release or before entry. The remaining discussion addresses conservative design / safety-factor considerations and verification and recalculation, including preserve worksheets, assumptions, and revisions as controlled design records.

M20L6 – Calculating Dilution Airflow for Fire and Explosion Prevention
Explore calculating dilution airflow for fire and explosion prevention through fire and explosion fundamentals and ventilation for fire and explosion prevention. The content brings together highlighting special concern in enclosed rooms, tanks, pits, and process buildings and ensuring equipment selection matches the flammability risk of the environment. Attention then turns to airflow calculations for combustible atmospheres and regulatory thresholds and operating criteria, with examples including distinguishing continuous operation, intermittent release, and purge-before-entry conditions. The content also examines air density adjustments due to high temperatures and common design failures, with emphasis on accounting for plume rise, thermal layering, and accumulation at high points.

M20L7 – Fans and Airflow Resistance in Dilution Ventilation
Study fans and airflow resistance in dilution ventilation from the perspective of fan fundamentals and principles of airflow resistance. The discussion covers explaining that required airflow is achieved only when fan pressure overcomes total system resistance and showing how modest layout changes can produce major performance penalties. The remaining discussion addresses insufficient openings and excessive duct length and too many elbows or sharp turns, including showing how inadequate inlet or relief openings starve the system and reduce real airflow. Attention then turns to restricted or collapsing duct diameter and troubleshooting fans and resistance problems, with examples including inspecting filters, screens, and dampers because they can behave like major restrictions.

M20L8 – Ventilation of Normally Unoccupied Enclosed Spaces
A systematic review of ventilation of normally unoccupied enclosed spaces starts with nature of normally unoccupied enclosed spaces and temporary workspace ventilation needs. The content brings together treating non-routine entry as a separate hazard assessment and ventilation design problem and integrating temporary ventilation with permits, isolation, testing, communication, and rescue planning. Further coverage addresses principles for temporary dilution ventilation and portable ventilation equipment, particularly secure and identify controls and power supply against interruption or unauthorised interference. It then considers confined-space ventilation package derating and conservative practice of selecting approximately double the calculated airflow, including re-test atmosphere before entry and during occupancy to verify effectiveness.

M20L9 – Measuring Dilution Ventilation Performance
The learning begins with what dilution ventilation performance means and verification of actual airflow delivery to establish the basis for measuring dilution ventilation performance. Attention is given to evaluating both worker exposure and roomwide contaminant behaviour and measuring supply and exhaust airflow with suitable instruments and methods. The content also examines visualising airflow and diagnosing circulation problems and contaminant-based performance checks, with emphasis on examining upper and lower zones, corners, mezzanines, pits, and worker stations. Further coverage addresses commissioning, trending, and ongoing assurance and common measurement and interpretation errors, particularly setting action levels for abnormal drift before exposures become unacceptable.

Module 21 - General Ventilation of Nonindustrial Occupancies

M21L1 – Foundations of IAQ and Energy Tradeoffs
The learning begins with scope and context of general ventilation in nonindustrial occupancies and energy conservation versus IAQ to establish the basis for foundations of IAQ and energy tradeoffs. The discussion covers introducing source–pathway–receptor thinking for indoor contaminant control and how outdoor air treatment, fan power, humidification, dehumidification, and reheat affect energy use. Further coverage addresses occupant health, comfort, and productivity and ventilation tradeoffs between energy use and IAQ, particularly why odour, stale-air perception, and symptom complaints matter even when toxic concentrations are low. It then considers current incentives and regulations around indoor environmental quality in buildings, including examining rating and certification systems that reward strong IEQ performance in offices and commercial buildings.

M21L2 – IAQ Terms, Responsibility, and Building-Related Illness
Review the main elements of IAQ terms, responsibility, and building-related illness, starting with core IAQ terminology and what is IAQ and who is responsible?. The content brings together defining IAQ, IEQ, contaminant, emission source, infiltration, exfiltration, ventilation, filtration, and air cleaning and examining owner and employer duties to provide safe, functional, and properly maintained occupied spaces. It then considers responsibility for regulating IAQ and building-related illnesses, sick building syndrome, biotoxin-related illness, and multiple chemical sensitivities, including examining the practical role of consensus standards, guidance documents, and industry good practice. Additional focus is placed on relationship of IAQ to productivity, with attention to connecting complaint management to retention, morale, and trust in facility management.

M21L3 – IAQ Guidelines and HVAC Fundamentals
Review the main elements of IAQ guidelines and HVAC fundamentals, starting with indoor air quality guideline framework and HVAC system fundamentals. The discussion covers introducing guideline sources for moisture, mould, selected pollutants, radon, combustion products, and particulate matter and identifying the main HVAC components: outdoor air intake, return air path, filters, coils, fans, dampers, ducts, diffusers, exhaust, and controls. The content also examines zones and outdoor air supply and air distribution effectiveness, with emphasis on defining ventilation effectiveness and explain short-circuiting, dead zones, and stratification. Further coverage addresses pressure relationships and airflow direction, particularly examining how entrance lobbies, clean corridors, and sensitive occupancies may require positive pressure.

M21L4 – HVAC Sources and Causes of IAQ Problems I
Develop a structured understanding of HVAC sources and causes of IAQ problems i by examining moisture and dampness and moisture-driven IAQ consequences. The content brings together examining the role of condensate pans, wet insulation, fouled coils, and blocked drains in HVAC-associated microbial growth and emphasising correction of water source and drying, not cosmetic cleaning alone. It then considers outdoor pollutant intrusion and bioaerosols and infectious aerosol concerns, including examining particle-size behavior, suspension time, and the importance of ventilation, filtration, and clean-air delivery. Additional focus is placed on field prevention priorities, with attention to examining temporary control options during outdoor-pollution events or outbreak periods.

M21L5 – HVAC Sources and Causes of IAQ Problems II
Build a clear understanding of HVAC sources and causes of IAQ problems II by considering filtration deficiencies and operation and maintenance deficiencies. The content brings together emphasising scheduled inspection, replacement, and pressure-drop trending and covering disabled economizers, stuck dampers, failed actuators, inaccurate sensors, and overridden controls. The remaining discussion addresses major indoor air pollutants and sources and microorganisms in indoor air, including explaining the contribution of cooking, attached garages, copy rooms, and renovation activities. Attention then turns to dust mites, rodents, and surface microorganisms, with examples including relating food storage, waste management, housekeeping, and envelope breaches to pest persistence.

M21L6 – HVAC Standards for IAQ
Consider HVAC standards for IAQ by first reviewing HVAC standards for maintaining adequate IAQ and consensus standards. The discussion covers why standards provide minimum requirements, not guaranteed optimal outcomes and explaining the importance of filtration classification and testing standards when selecting HVAC filters. Additional focus is placed on regulatory standards and ventilation-rate guidance, with attention to emphasising that inadequate distribution can undermine otherwise acceptable rate calculations. The remaining discussion addresses air cleaning and filtration, including covering portable air cleaners in terms of room sizing, CADR, noise, placement, and upkeep.

M21L7 – Testing, Troubleshooting, and Maintaining HVAC Systems I
Understand testing, troubleshooting, and maintaining HVAC systems i through a connected review of simple calculations for characterizing the airflow in a space. The material includes collect complaint history, symptom timing, affected locations, maintenance records, and prior test data and using simple calculations to identify obviously implausible airflow claims. The content also examines troubleshooting HVAC systems and operation and maintenance, with emphasis on covering inspection of filters, coils, condensate systems, dampers, belts, motors, drives, and control components. Further coverage addresses common field mistakes and pitfalls, particularly correcting symptoms with fragrance or increased cooling instead of solving source and airflow problems.

M21L8 – Testing, Troubleshooting, and Maintaining HVAC Systems II
Understand testing, troubleshooting, and maintaining HVAC systems II through a connected review of outdoor air optimization and risks and constraints in outdoor air optimization. Attention is given to evaluating optimization during high-density events, partial occupancy, and after-hours use and how over-ventilation can raise energy demand, destabilize humidity control, and create comfort complaints. Additional focus is placed on verification of actual air delivery and continuous or periodic IAQ monitoring concepts, with attention to emphasising the limitations of low-cost sensors and the need for confirmation when findings matter. The remaining discussion addresses using monitoring data for decisions, including linking trends to HVAC schedules, outdoor conditions, cleaning events, and complaints.

M21L9 – IAQ Assessment Methods I
Understand IAQ assessment methods i through a connected review of assessment of IAQ and interviewing building occupants. Attention is given to setting realistic objectives, scope, and stop rules before sampling begins and collect symptom timing, location patterns, work tasks, perceived sources, and affected groups. The remaining discussion addresses walkthrough survey and measurement approaches (environmental monitoring), including distinguishing indicator parameters from contaminant-specific measurements. Attention then turns to sampling protocols, with examples including time measurements to complaint periods, HVAC operation, and likely peak emissions.

M21L10 – IAQ Assessment Methods II
Gain a focused overview of IAQ assessment methods II, with initial attention to measurement methods for ventilation and combustion indicators and measurement methods for particulate matter. These areas involve using CO2 as an occupancy and ventilation indicator while recognizing it is not a universal IAQ surrogate and using indoor–outdoor comparison and activity logs to improve source attribution. It then considers measurement methods for organic pollutants and measurement methods for biological agents and allergens, including relating emissions to new materials, furnishings, adhesives, coatings, consumer products, and cleaning activities. Additional focus is placed on measurement methods for radon and odour, with attention to distinguishing short-term screening from longer-term radon assessment methods.

M21L11 – Indoor-Outdoor Relationships and Thermal Comfort
A systematic review of indoor-outdoor relationships and thermal comfort starts with indoor–outdoor air relationships and relationship between indoor air and outdoor air. Key learning areas include emphasising that source dominance changes by building, season, and activity pattern and using indoor–outdoor comparison to improve interpretation of measurement results and control priorities. Further coverage addresses managing the indoor–outdoor interface and thermal comfort factors, particularly coordinating building envelope repair with HVAC operation and maintenance. It then considers thermal comfort assessment and application, including using recognized thermal comfort frameworks to evaluate conditions acceptable to most occupants.

M21L12 – Dynamics and Control of IAQ
Consider dynamics and control of IAQ by first reviewing dynamics of IAQ and pollutant dynamics in buildings. The discussion covers explaining that indoor pollutant concentration changes over time rather than remaining constant and distinguishing gases, particles, bioaerosols, and SVOCs by transport, persistence, and removal behavior. Additional focus is placed on core control principles and practical IAQ control measures, with attention to strengthen filtration where systems permit and supplement strategically with portable air cleaners. The remaining discussion addresses IAQ program implementation and continuous improvement, including using monitoring, recommissioning, and lessons learned to refine control performance over time.

Module 22 - Respiratory Protection

M22L1 – Foundations of Respiratory Protection
Consider foundations of respiratory protection by first reviewing role and scope of respiratory protection and core principles of protection. Key learning areas include emphasising that respirators protect only the inhalation route unless integrated with eye, skin, and other PPE controls and why selection must account for contaminant form, concentration, warning properties, and exposure duration. It then considers respiratory protection program framework and limitations and human factors, including clarifying management, worker, supervisor, and program administrator responsibilities. Additional focus is placed on professional and ethical context, with attention to connecting respiratory protection to anticipation, recognition, evaluation, control, and verification of effectiveness.

M22L2 – Worksite Procedures and Exposure Assessment
Study worksite procedures and exposure assessment from the perspective of worksite-specific procedures and facial hair and interference policies. The material includes defining escape-only respirator use versus entry/rescue respirator use and why tight-fitting facepieces require an unimpaired seal and unobstructed valve function. Additional focus is placed on exposure assessment of respirator wearers and cartridge change schedules, with attention to determining whether inhalation is the only relevant route or whether skin and eye exposure also drive risk. The remaining discussion addresses knowledge of respiratory hazards, including requiring workers to understand what the respirator is protecting against and what it cannot do.

M22L3 – Respirator Selection and Medical Evaluation
Build a clear understanding of respirator selection and medical evaluation by considering selection of proper respiratory-protective equipment and selecting for particulates, gases, and vapors. Key learning areas include matching respirator type to contaminant class, concentration, oxygen status, task demands, and required protection level and addressing combination cartridges for mixed atmospheres. Attention then turns to medical evaluations of respirator wearers and follow-up and reevaluation, with examples including protecting confidentiality while communicating fitness-for-duty limitations relevant to safe respirator use. The content also examines integrating medical evaluation with exposure control, with emphasis on addressing residual risk from ingestion and skin absorption even when inhalation protection is adequate.

M22L4 – Fit, Training, Maintenance, Air Quality, and Administration
A systematic review of fit, training, maintenance, air quality, and administration starts with respirator fit and training and retraining. These areas involve addressing facial hair, weight change, facial surgery, dental changes, and other factors affecting fit and training before initial use on hazards, respirator capabilities, limitations, donning, doffing, seal checks, emergency use, and defect recognition. It then considers respirator maintenance and air quality for atmosphere-supplying devices, including including routine testing and documentation of supplied-air quality. Additional focus is placed on program administration and evaluation, with attention to assigning a qualified program administrator with authority proportional to program complexity.

M22L5 – Regulations, Approvals, and Jurisdictional Requirements
Explore regulations, approvals, and jurisdictional requirements through history of respirator regulations and approvals and international standards. The discussion covers placing current approval systems in the context of national market surveillance and worker protection law and examining the transition from older AS/NZS 1715/1716 structures toward ISO-aligned respiratory device standards where applicable. The content also examines international and jurisdiction-specific regulatory requirements and approvals, labeling, and approval integrity, with emphasis on explaining certification marks, approval numbers, labels, color coding, and instructions that must remain legible and intact. Further coverage addresses voiding an approval, particularly examining market notices, product recalls, and voluntary rescission announcements as program-review triggers.

M22L6 – Classes of Respirators
Build a clear understanding of classes of respirators by considering classification by source of breathing air and air-purifying classes. Key learning areas include distinguishing air-purifying respirators from atmosphere-supplying respirators and explaining limitations in oxygen-deficient, unknown, and IDLH atmospheres. Further coverage addresses atmosphere-supplying classes and classification by facepiece and inlet covering, particularly relating tight-fitting and loose-fitting designs to fit-testing requirements. It then considers classification by performance and protection, including stressing that respirator class must be matched to the worst credible exposure condition, not the average condition.

M22L7 – Air-Purifying Respirators for Aerosols
A systematic review of air-purifying respirators for aerosols starts with air-purifying devices for aerosol hazards and n-series filters. Key learning areas include identifying limitations for oxygen deficiency, unknown concentrations, and IDLH conditions and examining the need to combine efficiency selection with fit, APF, and exposure assessment. It then considers r-series filters and p-series filters, including relating P-series selection to welding, oily mist, spray, and mixed particulate settings where appropriate. Additional focus is placed on field use, failure modes, and replacement, with attention to addressing counterfeit filtering facepieces and the need to verify approved products.

M22L8 – Gas/Vapor Air-Purifying Respirators and PAPRs
The learning begins with gas/vapor-removing respirators and adsorption and chemosorption to establish the basis for gas/vapor air-purifying respirators and PAPRs. The material includes addressing combination cartridges where both particulate and gas/vapor hazards exist and defining adsorption on activated carbon and chemisorption for selected contaminant classes. The remaining discussion addresses service-life factors and cartridge change schedules and powered air-purifying respirators (PAPRs), including addressing battery management, airflow checks, alarms, hose integrity, and contamination control. Attention then turns to selection, use, and limitations of PAPRs, with examples including comparing PAPRs with negative-pressure APRs on protection, comfort, communication, mobility, and maintenance.

M22L9 – Atmosphere-Supplying Respirators
Build a clear understanding of atmosphere-supplying respirators by considering supplied-air respirators (SARs). Attention is given to addressing pressure-demand preference where high reliability is required and covering airline respirators in continuous-flow, demand, and pressure-demand modes. Additional focus is placed on self-contained breathing apparatus (SCBA) and combination air-purifying and atmosphere-supplying devices, with attention to examining transition planning for line failure, egress, and emergency escape. The remaining discussion addresses breathing gas quality and operational integrity, including preventing incompatible couplings, contaminated supply lines, and misuse of oxygen- rich systems.

M22L10 – Respirator Selection Process
Consider respirator selection process by first reviewing selection requirements. Attention is given to starting selection with hazard characterization, not with product preference or availability and evaluating user factors including facial characteristics, medical limitations, training level, and likelihood of consistent compliance. It then considers hazard determination and selection steps: APFs, oxygen sufficiency, and IDLH, including selecting positive-pressure SCBA or pressure-demand SAR with auxiliary escape supply for IDLH entry where required. Additional focus is placed on effective protection factor and real-world performance, with attention to distinguishing nominal/APF-based protection from effective or workplace protection achieved in practice.

M22L11 – Respirator Fit Testing I
Develop a structured understanding of respirator fit testing i by examining user seal check. The discussion covers defining fit testing as verification that a specific tight-fitting respirator model and size can seal adequately on a specific wearer and teaching positive- and negative-pressure seal-check principles and correct sequence during donning. The content also examines qualitative fit testing and qualitative fit-test protocols, with emphasis on explaining pass/fail testing based on the wearer’s sensory detection of a challenge agent. Further coverage addresses interpreting and using QLFT results, particularly connecting fit results back to issuance practices, inventory management, and user training.

M22L12 – Respirator Fit Testing II
Analyse respirator fit testing II by starting with quantitative fit testing and quantitative fit factors. The discussion covers addressing instrument calibration, maintenance, and operator competence and using numerical results to compare models, sizes, and donning technique. The remaining discussion addresses quantitative fit-test protocol and positive-pressure respirators in fit testing, including why fit evaluation for positive-pressure respirators has special limitations. Attention then turns to applying QNFT results in program management, with examples including using quantitative results for issue decisions, model standardization, and targeted retraining.

M22L13 – OSHA Respiratory Protection Standards
Examine the essential principles of OSHA respiratory protection standards, beginning with structure and purpose of OSHA respiratory protection standards and respirator selection under OSHA. The material includes connecting standard structure to hazard evaluation, selection, medical evaluation, fit testing, use, maintenance, air quality, training, and recordkeeping and requiring identification and evaluation of respiratory hazards, including reasonable exposure estimates and contaminant physical form. The content also examines medical evaluation, fit testing, and use requirements and maintenance, breathing air, and training, with emphasis on providing medical evaluation before fit testing and required respirator use. Further coverage addresses program evaluation, recordkeeping, and enforcement implications, particularly designate a qualified program administrator and evaluate program effectiveness regularly.

Module 23 - Personal Protective Equipment

M23L1 – Foundations of Personal Protective Equipment Programs
Consider foundations of personal protective equipment programs by first reviewing role and limits of personal protective equipment and elements of a PPE program. The material includes consequences of underprotection, overprotection, and false confidence in equipment alone and program scope, policy, roles, responsibilities, and accountability for employers, supervisors, workers, and competent persons. The content also examines hazard assessment and job task analysis, identification of all routes of entry, and PPE selection strategy, with emphasis on inhalation risks from dusts, fumes, mists, vapors, gases, and oxygen-deficient or IDLH atmospheres. Further coverage addresses overprotection, underprotection, and practical balance, compatibility of multiple PPE elements, and program outputs and field application, particularly selection decisions should balance protection, usability, duration, environmental conditions, and emergency contingencies.

M23L2 – PPE Procedures, Fit, Training, and Maintenance
Develop a structured understanding of PPE procedures, fit, training, and maintenance by examining standard operating procedures for PPE use and fitting PPE to the worker. Attention is given to defining stop-work criteria for equipment failure, unexpected exposure, contamination spread, or wearer distress and how proper fit is required for protective performance, comfort, and sustained compliance. Further coverage addresses fit-sensitive PPE considerations, training requirements, and competency verification and retraining, particularly requiring demonstrations of correct use before independent work begins. It then considers maintenance, cleaning, and sanitation, inspection, repair, and replacement, and common procedure and maintenance failures, including remove defective or damaged equipment from service immediately and prevent unauthorized reuse.

M23L3 – PPE Administration and Program Oversight
Develop a structured understanding of PPE administration and program oversight by examining program governance and accountability and employer-provided and employee-owned PPE. These areas involve defining responsibilities for management, supervisors, safety professionals, occupational hygienists, stores, maintenance personnel, and workers and defining limits on personally supplied items that may conflict with site-issued protection or standards. Further coverage addresses recordkeeping and documentation, voluntary use of PPE, and program evaluation, particularly ensuring voluntary PPE does not undermine engineering controls, safe work practices, or emergency readiness. It then considers auditing and corrective action, change management and continuous improvement, and ethical, cultural, and communication issues, including re-evaluate PPE when introducing new chemicals, tools, work methods, facilities, contractors, or regulatory requirements.

M23L4 – Eye, Face, Head, and Foot Protection
Gain a focused overview of eye, face, head, and foot protection, with initial attention to selection principles for specific PPE and eye and face protection for impact hazards. Attention is given to considering compatibility with respirators, hearing protection, communication systems, and prescription eyewear and using safety spectacles, goggles, face shields, welding helmets, and specialized visors according to the impact and particle hazard. The content also examines dust and chemical protection, optical radiation hazards, and head protection fundamentals, with emphasis on inspecting lenses for scratches, pitting, coating damage, or contamination that reduces vision or protective performance. Further coverage addresses optional features and mounted accessories, foot protection, and common errors and field pitfalls, particularly selecting footwear for impact, compression, puncture, metatarsal, slip, chemical, hot- surface, or electrical hazards as required by the task.

M23L5 – Hand Protection and Chemical-Protective Clothing
Study hand protection and chemical-protective clothing from the perspective of hand hazard assessment and types of hand protection. These areas involve recognising that dermatitis risk may arise from chemicals, occlusion, sweating, repeated washing, and contaminated gloves and matching glove thickness and construction to exposure severity without unnecessarily sacrificing dexterity. Additional focus is placed on chemical glove selection, special hand hazards, and chemical-protective clothing fundamentals, with attention to treating chemical-protective clothing as an ensemble that may include aprons, sleeves, coats, coveralls, hoods, boots, and fully encapsulating suits. The remaining discussion addresses penetration, degradation, and permeation, wearing limitations and operational burden, and common failure modes and field pitfalls, including how chemical-protective clothing can create heat stress, restricted mobility, impaired communication, poor visibility, and reduced manual performance.

M23L6 – PPE Protection Levels and Radiation PPE
Develop a structured understanding of PPE protection levels and radiation PPE by examining purpose of protection levels and level a protection. Attention is given to using PPE levels as structured emergency-response starting points for selecting ensembles against combined respiratory, dermal, ocular, and operational hazards and fully encapsulating vapor-protective chemical suit with the highest available respiratory, skin, and eye protection. It then considers level b protection, level c protection, and level d protection, including how air-purifying respirator or powered air-purifying respirator with chemical-resistant clothing where contaminants and concentrations are known. Additional focus is placed on selecting, upgrading, and downgrading levels, PPE and ionizing radiation, and radiation PPE and practical limitations, with attention to recognising that protective clothing is limited against penetrating gamma or neutron fields and is only one part of a radiation protection program.

Module 24 - The Industrial Hygienist

M24L1 – Industrial Hygiene Roles and Career Paths
Gain a focused overview of industrial hygiene roles and career paths, with initial attention to industrial hygiene practice and job descriptions and career settings. Attention is given to industrial hygiene as the science and practice of anticipating, recognizing, evaluating, communicating, and controlling workplace health hazards and typical employment settings: manufacturing, mining, construction, laboratories, healthcare, energy, government, academia, consulting, and insurance/risk services. Additional focus is placed on occupational safety and health technologist (OHST), industrial hygienist, and industrial hygienist-in-training (IHIT), with attention to OHST practice as a technician/technologist-level role with strong emphasis on routine safety and industrial hygiene tasks. The remaining discussion addresses industrial hygiene manager, certified industrial hygienist (CIH), and outside contractors and external IH support, including CIH represents advanced professional competence in protecting worker and public health from workplace hazards.

M24L2 – Industrial Hygiene in Civil Service and Core Competencies
Analyse industrial hygiene in civil service and core competencies by starting with public-sector role of the OSHA industrial hygienist. The discussion covers how civil-service industrial hygiene roles support worker health through enforcement, compliance assistance, research, public health protection, compensation systems, and technical policy and effective OSHA hygiene work combines technical rigor with procedural fairness and communication that can withstand legal scrutiny. It then considers training plan for entry-level OSHA industrial hygienists, communication skills as a core competency, and toxicology and epidemiology, including a strong public-sector training pathway links field competence to later advanced practice and respected professional credentials. Additional focus is placed on chemistry, ventilation engineering, ergonomics, and acoustics, statistics as a core competency, and integrating core competencies in practice, with attention to how competence in industrial hygiene is cumulative and interdisciplinary rather than a collection of isolated subjects.

M24L3 – Education, Training, and Professional Development Needs
Build a clear understanding of education, training, and professional development needs by considering personnel needs and problems and entry preparation and foundational knowledge. The material includes many organizations still under-resource health risk management compared with safety management, creating chronic capability gaps and early training should make clear the difference between task familiarity and professional competence in exposure assessment. Further coverage addresses education and training programs, educational resource centers, and professional schooling and graduate curricula, particularly curricula should also address standards interpretation, sampling design, laboratory methods, uncertainty, QA/QC, and report writing. It then considers faculty, continuing education, and career-long professional development, including continuing education should address changes in standards, instrumentation, control technologies, data analysis, biological monitoring, and emerging hazards.

M24L4 – Certification Maintenance and Professional Societies
Understand certification maintenance and professional societies through a connected review of purpose of certification maintenance and certification maintenance for the CIH. The material includes how recertification should emphasize technical growth, ethical conduct, and evidence that the practitioner remains active in relevant practice and how ethical standing, accurate records, and timely recertification are part of professional responsibility, not administrative afterthoughts. Further coverage addresses building a strong maintenance portfolio, reduced internal SHE staffing and outsourcing trends, and managing outsourced industrial hygiene services, particularly consultant selection should assess competence, supervision, quality assurance, insurance, ethics, and relevance of prior project experience. It then considers american industrial hygiene association (AIHA) and the american academy of industrial hygiene (AAIH), American Board of Industrial Hygiene (ABIH) / Board for Global EHS Credentialing (BGC), and american conference of governmental industrial hygienists (ACGIH) and american public health association (APHA), including the credentialing body should be presented accurately in its current form while recognizing the historical ABIH identity familiar to many practitioners.

Module 25 - The Safety Professional

M25L1 – Scope and Functions of the Safety Professional
Consider scope and functions of the safety professional by first reviewing the safety professional and the scope of practice and protection of people, property, and the environment. The material includes emphasising evidence-based practice, professional judgment, and decision support rather than fault-finding alone and framing safety work around prevention of injury, illness, fatalities, property loss, process upset, fire, explosion, environmental release, and business interruption. The content also examines multidisciplinary nature of safety practice and hazard identification and evaluation, with emphasis on explaining the engineering contribution to design review, machine safeguarding, process safety, ventilation, fire protection, ergonomics, and reliability. Further coverage addresses development of factual, unbiased, objective information and safe product development support, particularly gather facts from records, observations, interviews, measurements, standards, and credible technical references.

M25L2 – Careers in Safety and Professional Identity
A systematic review of careers in safety and professional identity starts with the career landscape in safety and major employment sectors. The content brings together emphasising that career paths often combine safety, industrial hygiene, environmental, quality, and operational responsibilities and manufacturing: machine safety, hazardous energy, chemical risks, ergonomics, contractor control, and process changes. Attention then turns to definition of a safety professional and core accident prevention activities, with examples including defining the safety professional as a competent practitioner who applies science, systems thinking, ethics, and management principles to prevent loss. The content also examines professional identity, ethics, and influence and career development and growth, with emphasis on building capability through formal education, field experience, mentoring, and continuing professional development.

M25L3 – Safety Programs, Staff Roles, and Standards
Explore safety programs, staff roles, and standards through safety and health programs and staff versus line status. Key learning areas include defining a safety and health program as a structured system for policy, planning, implementation, monitoring, and improvement and addressing conflict points between production goals and risk controls through management expectations and escalation rules. The remaining discussion addresses codes, standards, and regulatory requirements and policies and procedures, including developing policy statements that define management commitment, roles, and expectations. Attention then turns to engineering and machine/equipment design and purchasing, procurement, and contractor interfaces, with examples including prioritising elimination, substitution, isolation, containment, guarding, interlocks, alarms, and fail-safe design.

M25L4 – Safety and Health Inspections
Understand safety and health inspections through a connected review of purpose and types of inspections and planning and preparation. The discussion covers including health-related inspections for exposure sources, ventilation, housekeeping, and hygiene conditions and defining scope, schedule, inspection criteria, team composition, and documentation tools before entering the area. The content also examines inspection of work areas and safety inspectors or technicians and safety professionals, with emphasis on examining access and egress, housekeeping, storage, signage, lighting, and emergency equipment. Further coverage addresses third-party inspections and audits and corrective actions and follow-through, particularly preparing third-party reviews with clear scope, standards, access, and document availability.

M25L5 – Accident and Occupational Illness Investigations
Build a clear understanding of accident and occupational illness investigations by considering purpose and principles of investigation and types of investigations. The material includes including injuries, illnesses, exposures, property damage, process upsets, environmental releases, and near misses and occupational illness investigations involving exposure history, latency, and medical input. The remaining discussion addresses immediate response and evidence preservation and who conducts the investigation?, including protecting sensitive records and maintain chain of custody where needed. Attention then turns to investigation methods and analysis and reporting, corrective action, and organizational learning, with examples including how reopen the investigation if later evidence changes the cause picture or reveals missed exposures.

M25L6 – Record Keeping and Reporting
Gain a focused overview of record keeping and reporting, with initial attention to purpose and value of records and accident reports and illness records. The discussion covers treating records as decision tools, not merely compliance paperwork and distinguishing confidential medical information from operational safety data. The content also examines core content of a good incident record and reporting requirements and time-critical notifications, with emphasis on witness information, photographs, sketches, and attachments. Further coverage addresses analysis and use of record data and records governance, privacy, and quality, particularly calculating and interpret rates, frequencies, severities, and leading indicators with caution.

M25L7 – Education and Training in Safety
Review the main elements of education and training in safety, starting with safety education and training and employee training. The material includes treating training as one control measure within a broader management system and covering orientation, hazards of the work area, emergency actions, reporting expectations, and stop-work responsibilities. It then considers maintaining interest in safety and safety and health rule enforcement, including addressing noncompliance through coaching, retraining, accountability, and escalation as appropriate. Additional focus is placed on role of the supervisor and supervisor training and job safety and health analysis, with attention to emphasising that supervisor credibility strongly shapes workforce safety culture.

M25L8 – Risk Management and Systems Safety
A systematic review of risk management and systems safety starts with risk management fundamentals and a five-step risk management program. The content brings together defining risk in terms of what can happen, how likely it is, and how severe the consequences may be and establishing context, scope, stakeholders, and decision criteria. Further coverage addresses risk analysis inputs and decision criteria and damage control, particularly using redundancy, detection, alarms, isolation, containment, and shutdown systems to limit escalation. It then considers systems safety principles and methods of analysis, including preliminary hazard analysis for early-stage identification of major hazards and control needs. Additional focus is placed on implementation, review, and risk communication, with attention to assigning risk owners and action deadlines for every significant risk treatment.

M25L9 – Certification and the Future of the Safety Profession
Explore certification and the future of the safety profession through purpose and value of certification and general qualifications for safety professionals. Key learning areas include explaining certification as formal recognition of competence, credibility, and commitment to professional standards and sustain competence through continuing education, mentoring, and reflective practice. Attention then turns to BCSP framework and credential pathways and professional identity, capability, and lifelong learning, with examples including explaining role-specific pathways such as OHST for occupational hygiene and safety technician functions and CHST for construction safety practice. The content also examines the future of safety as a profession and strategic career planning for the next generation, with emphasis on matching credentials, experience, and sector exposure to intended career direction.

Module 26 - The Occupational and Environmental Health Clinician Team

M26L1 – Foundations and Focus of the Clinician Team
Consider foundations and focus of the clinician team by first reviewing purpose, mission, and composition of the clinician team and occupational and environmental dimensions of practice. Key learning areas include distinguishing the team’s preventive and systems-oriented mission from episodic treatment alone and emphasising worker-population, workplace, and community perspectives rather than a single-patient-only model. The remaining discussion addresses core focus areas of the team and partnership with industry, government, and labor, including anticipation, recognition, evaluation, communication, and control of hazards. Attention then turns to prevention as the primary orientation and surveillance, clinical care, and population health management, with examples including integrating health promotion only when it does not distract from controlling work hazards at the source. The content also examines clinical care, work ability, and return-to-work, with emphasis on framing clinical care around diagnosis, causation analysis, treatment, prognosis, and preservation of function.

M26L2 – Occupational and Environmental Medicine Physician: Role and Development
Examine the essential principles of occupational and environmental medicine physician: role and development, beginning with specialty identity and professional role and core functions of the OEM physician. Attention is given to defining occupational and environmental medicine as a preventive medicine specialty centered on worker health, work ability, workplace exposures, and environmental determinants of disease and diagnose and manage occupational and environmental illnesses and injuries. Attention then turns to expanded environmental focus of occupational medicine and new and emerging challenges in practice, with examples including extend the physician’s scope beyond workplace-only exposures to community, home, consumer, and environmental sources relevant to symptoms and risk. The content also examines knowledge base and interdisciplinary development and residency and board pathway, with emphasis on covering complementary pathways for physicians entering the field mid-career where applicable. Further coverage addresses professionalism, leadership, and ethical practice, particularly demonstrating cultural competence, impartiality, and evidence-based judgment across diverse workforces and jurisdictions.

M26L3 – Occupational and Environmental Medicine Physician: Practice and Clinical Scope
Explore occupational and environmental medicine physician: practice and clinical scope through practice settings i: employer-based and community-based care and practice settings II: consulting, academic, government, international, and union practice. Attention is given to distinguishing operational priorities, referral patterns, documentation styles, and business pressures across these settings and government agencies: perform regulatory, military, public health, compensation, surveillance, and policy functions. The remaining discussion addresses medical surveillance protocols and program oversight, fitness-for-duty, work ability, and accommodation, and wellness programs, health promotion, and organizational health, including documenting clear functional recommendations while avoiding unnecessary disclosure of diagnosis. Attention then turns to epidemiologic and environmental investigation support, occupational health history: core clinical structure, and occupational health history: expanded exposure and functional inquiry, with examples including translating investigation results into control priorities, communication plans, and surveillance changes.

M26L4 – Occupational Health Nursing Foundations
Gain a focused overview of occupational health nursing foundations, with initial attention to definition and professional scope of the specialty. Key learning areas include recognising the specialty’s role across industrial, healthcare, office, remote, and hybrid work environments and ground the specialty in health promotion, disease prevention, protection from work- related and environmental hazards, and restoration of health and function. The content also examines clinical care and case management functions, hazard assessment, surveillance, and trend investigation, and compliance support, documentation, and program administration, with emphasis on providing triage, first aid, episodic care, chronic condition support, and referral coordination within scope. Further coverage addresses health promotion, disease prevention, counseling, and training, research and evidence-based practice, and models of occupational health service delivery, particularly comparing in-house services, contracted services, shared services, mobile services, telehealth-supported services, and hybrid models.

M26L5 – Occupational Health Nursing Competencies and Outcomes
Gain a focused overview of occupational health nursing competencies and outcomes, with initial attention to core competencies of the OHN and primary prevention in OHN practice. The content brings together clinical assessment, triage, documentation, and occupationally focused nursing judgment and supporting hazard communication, PPE training, ergonomics education, and safe work practices. It then considers secondary prevention in OHN practice and tertiary prevention in OHN practice, including trigger corrective action before minor findings progress to disabling disease. Additional focus is placed on programs commonly managed by OHNs and outcome measures for OHN programs, with attention to documentation quality: completeness, timeliness, consistency, traceability, and defensibility of records. The remaining discussion addresses using outcomes to improve practice, including demonstrating the OHN’s value in prevention, compliance, care quality, and workforce resilience.

Module 27 - The Occupational Medicine Physician

M27L1 – History, Credentials, and Professional Associations
Gain a focused overview of history, credentials, and professional associations, with initial attention to occupational medicine physician and historical foundations of occupational medicine. Attention is given to emphasising the dual perspective of how work affects health and how health affects the ability to work safely and using Percivall Pott, Alice Hamilton, asbestos disease, lead poisoning, dust diseases, and solvent illness as landmark examples. The remaining discussion addresses evolution of the modern specialty and credentials, training, and professional development, including outlining the medical pathway: basic medical qualification, clinical foundation training, specialty training, supervised practice, and specialist recognition. Attention then turns to professional associations and their functions and professional identity, ethics, and common pitfalls, with examples including showing how occupational physicians interact with allied bodies such as AIHA, ACGIH, BOHS, IOHA, AIOH, ICOH, and specialty nursing and ergonomics organizations.

M27L2 – Practice Settings of the Occupational Medicine Physician
Consider practice settings of the occupational medicine physician by first reviewing corporate medical department. The material includes defining practice setting as the organizational context in which occupational medicine services are delivered and describing embedded corporate practice within large employers, resource industries, transport systems, utilities, manufacturing, and multinational organizations. The content also examines multispecialty group practice and hospital-based programs, freestanding occupational health clinics, and private consulting firms, with emphasis on highlighting the importance of maintaining clinical independence despite productivity and throughput pressures. Further coverage addresses academic occupational medicine departments, government agencies, and international occupational health consulting, particularly describing occupational medicine roles within labor, mining, defense, public health, compensation, and regulatory agencies. It then considers union occupational health physicians, including addressing collaboration in return-to-work disputes, accommodation issues, compensation matters, and prevention campaigns.

M27L3 – Scope of Practice, Occupational Health History, and Preplacement Examination
Understand scope of practice, occupational health history, and preplacement examination through a connected review of core functions within scope of practice. The discussion covers framing scope around prevention, work participation, safe job matching, and protection of worker health and function and including diagnosis and management of work-related injury, illness, and exposure- related disease. Attention then turns to limits, interfaces, and professional boundaries, occupational health history: purpose and structure, and advanced occupational history and exposure interpretation, with examples including identifying common pitfalls: overstepping expertise, poor task understanding, unsupported causation opinions, and weak record control. The content also examines preplacement examination, components of a high-quality preplacement assessment, and decision-making, documentation, and common errors, with emphasis on classifying outcomes clearly: fit, fit with restrictions or accommodations, temporarily unfit pending further evaluation, or not fit for specific essential tasks.

Module 28 - The Occupational Health Nurse

M28L1 – Foundations, Scope, and Standards of Occupational Health Nursing
Examine the essential principles of foundations, scope, and standards of occupational health nursing, beginning with objectives. The material includes central emphasis on protecting workers while supporting healthy, safe, and productive organizations and explaining the purpose and value of occupational health nursing within a modern worker-health program. Attention then turns to definition of the occupational health nurse, scope of practice, and occupational health nursing in hazard recognition and risk management, with examples including worker education on hazards, controls, personal protection, reporting, and self-care practices. The content also examines standards of practice for occupational and environmental health nursing, legal, ethical, and professional boundaries, and core competencies for effective practice, with emphasis on commitment to continuing education, reflective practice, and specialty development.

M28L2 – Professional Membership, Certification, and Practice Models
Review the main elements of professional membership, certification, and practice models, starting with professional membership and certification and professional membership in occupational health nursing. Key learning areas include how ongoing engagement supports leadership development, policy awareness, and specialty visibility and active membership promotes leadership, committee work, teaching, mentorship, and research dissemination. Additional focus is placed on certification, credentialing, and competence assurance, practice of occupational health nursing, and models of occupational health services, with attention to how effective practice depends on understanding job demands, exposure scenarios, workforce characteristics, and organizational systems. The remaining discussion addresses OHN staffing principles, OHN staffing and outcomes, and practice risks and common pitfalls, including understaffing can shift the role into reactive first aid only and weaken prevention functions.

M28L3 – Prevention Roles in Occupational Health Nursing
Analyse prevention roles in occupational health nursing by starting with OHN role and levels of prevention and primary prevention. Key learning areas include prevention activities should be planned across individual, group, and organizational levels and how health promotion efforts are most effective when aligned with real job demands and exposure patterns. Additional focus is placed on primary prevention through hazard and work-system control, secondary prevention, and secondary prevention in practice, with attention to promote vaccination, infection prevention, respiratory hygiene, skin protection, and exposure-avoidance practices where relevant. The remaining discussion addresses tertiary prevention, tertiary prevention in practice, and integrating prevention levels and avoiding common errors, including tertiary prevention extends beyond injury recovery to chronic disease, mental health, long-latency illness, and permanent impairment.

M28L4 – OHN Programs and Evaluation of Outcomes
Analyse OHN programs and evaluation of outcomes by starting with programs commonly managed by OHNs and clinical and surveillance programs. These areas involve program design should integrate worker health needs with operational realities, site risk, and organizational governance and pre-placement and job-fit review programs aligned with inherent job demands and lawful fitness considerations. Additional focus is placed on emergency, exposure, and incident response programs, health promotion, work ability, and support programs, and program design, governance, and documentation, with attention to building in worker consultation, supervisor education, contractor inclusion, and review dates from the outset. The remaining discussion addresses evaluating outcomes of OHN activities, metrics, data sources, and interpretation, and continuous improvement and demonstrating value, including report results in a balanced form that protects confidentiality while supporting management decisions.

Module 29 - The Industrial Hygiene Program

M29L1 – Foundations and Components of an Industrial Hygiene Program
Study foundations and components of an industrial hygiene program from the perspective of program purpose and scope and core components of the IH program. Key learning areas include alignment with enterprise risk management, business continuity, and health protection goals and review, audit, corrective action, and continual improvement. Attention then turns to exposure evaluation and risk assessment and control and mitigation, with examples including using of SEGs, risk registers, and exposure profiles to prioritize action. The content also examines management and employee participation and systems-oriented program design, with emphasis on program integration with management systems, planning cycles, and operational controls.

M29L2 – Benefits of an Industrial Hygiene Program
Study benefits of an industrial hygiene program from the perspective of strategic value of the IH program and reduced costs. Attention is given to stronger integration of worker health with productivity, quality, and reliability and how reduced lifecycle cost when hazards are addressed early in design and procurement. The content also examines increased productivity and operational performance and improved employee morale and workforce confidence, with emphasis on supporting for quality, uptime, and production stability in complex operations. Further coverage addresses improved brand image and stakeholder confidence and faster implementation of regulatory requirements, particularly greater competitiveness in attracting talent for technically demanding operations.

M29L3 – Establishing the Written Industrial Hygiene Program
Explore establishing the written industrial hygiene program through program basis and governance and written program and policy statement. Attention is given to relationship to corporate OHS policy, management systems, and legal obligations and signed policy statement from top management. Additional focus is placed on planning activities: goals and objectives and procedures for hazard identification and exposure assessment, with attention to requirements for reassessment after process change, incident, or new information. The remaining discussion addresses procedures for control and risk management and procedures for program support and administration, including contractor coordination, procurement review, and pre-job health planning.

M29L4 – Hazard Recognition, Control, Training, and Participation
Analyse hazard recognition, control, training, and participation by starting with hazard recognition and evaluation fundamentals and exposure evaluation in practice. Attention is given to identification of chemical, physical, biological, and combined exposures and how immediate protective action when urgent or uncontrolled exposure is suspected. The content also examines hazard control and employee training and education, with emphasis on PPE as a supplementary control with defined selection, maintenance, and user requirements. Further coverage addresses documentation and recordkeeping and employee involvement, particularly access to relevant safety and health information, including exposure results.

M29L5 – Program Evaluation and Exposure Assessment Strategy
Develop a structured understanding of program evaluation and exposure assessment strategy by examining program evaluation and program audit and performance indicators and evidence sources. The material includes identification of systemic weaknesses, recurring deficiencies, and resource gaps and using of monitoring results, medical surveillance trends, maintenance records, and worker reports. Additional focus is placed on qualitative exposure assessment strategy and quantitative exposure assessment strategy, with attention to reassessment after process modifications, control changes, or abnormal results. The remaining discussion addresses statistical interpretation and compliance decision-making and corrective action and program improvement, including descriptive statistics, exposure distributions, and treatment of censored data.

M29L6 – Workplace, Workforce, and Agent Characterization
Analyse workplace, workforce, and agent characterization by starting with workplace characterization and workforce characterization. The material includes description of facility layout, process flow, departments, and exposure zones and consideration of experience, language, training level, and vulnerability factors. The remaining discussion addresses agent characterization and similar exposure groups (SEGs), including how reclassification when monitoring or process changes show the original grouping is weak. Attention then turns to exposure determinants and scenario definition and implications for monitoring, controls, and surveillance, with examples including building defensible exposure histories for continuity, trend review, and future case investigation.

M29L7 – Sampling Quality and Documentation Continuity
Study sampling quality and documentation continuity from the perspective of sampling planning and procedural discipline and sampling procedures and quality control. Key learning areas include coordination with operations to minimize disruption while preserving data quality and recognition of contamination, breakthrough, overload, and interferences as data- quality risks. The content also examines chain of custody and sample integrity and laboratory coordination and analytical conformance, with emphasis on how evaluation of whether reporting limits and uncertainty support the intended decision. Further coverage addresses documentation for continuity and documentation for conformance and defensibility, particularly recording retention and access practices that support compliance, worker information rights, and future review.

M29L8 – Organizational Responsibilities in the IH Program
Examine the essential principles of organizational responsibilities in the IH program, beginning with program governance and cross-functional integration and medical program responsibilities. Key learning areas include clear assignment of authority, accountability, and reporting relationships for the IH program and coordinating biological monitoring, symptom follow-up, and referral where indicated. Attention then turns to engineering responsibilities, safety function responsibilities, and purchasing responsibilities, with examples including preventing procurement practices from undermining established health controls. The content also examines general manager and supervisor responsibilities, employee responsibilities, and safety and health committee responsibilities, with emphasis on respect contamination-control, hygiene, and restricted-access requirements.

M29L9 – Program Structure, Resources, and Systems Orientation
Develop a structured understanding of program structure, resources, and systems orientation by examining influence of organization size and influence of organization type and risk profile. Key learning areas include larger firms need stronger coordination to avoid fragmented or duplicated efforts and how mining, manufacturing, healthcare, laboratories, and construction require different emphases. Further coverage addresses influence of organizational philosophy and culture and influence of available resources, particularly reactive cultures focus on complaints, incidents, and minimum compliance. It then considers traditional programs and systems-oriented programs, including built on policy, roles, processes, indicators, and continual improvement. Additional focus is placed on transitioning from traditional to systems-oriented practice, with attention to using early wins from better control, cleaner data, and stronger communication to sustain change.

Module 30 - Integration of Environmental, Industrial Hygiene and Safety Programs

M30L1 – Foundations of Integrated EHS Programs
A systematic review of foundations of integrated EHS programs starts with what is environmental, industrial hygiene, and safety integration?. Key learning areas include positioning integrated EHS as a business management system embedded in operations, design, procurement, maintenance, and change management and introducing common system elements: risk registers, procedures, permits, inspections, incident learning, audits, and corrective actions. Additional focus is placed on managing risks to people, property, and the environment and core risk management process in an integrated program, with attention to including confirmation and review through inspections, exposure trend analysis, medical surveillance where indicated, and management review. The remaining discussion addresses shared organizational responsibilities and program architecture and operating controls, including defining supervisor responsibilities for implementation, permit control, training reinforcement, and field verification. Attention then turns to communication, culture, and common pitfalls, with examples including building a reporting culture that values early reporting of exposures, near misses, environmental deviations, and weak signals.

M30L2 – Role of the Integrated EHS Function
Develop a structured understanding of role of the integrated EHS function by examining role of the EHS / integrated function within organizations and strategic planning. The discussion covers how the function supports governance, risk reduction, compliance assurance, and operational resilience and using leading and lagging indicators, trend data, and risk-ranking outputs to select priorities. Attention then turns to policy development and product stewardship, with examples including ensuring policies address worker health, environmental stewardship, legal compliance, ethical conduct, and continuous improvement. The content also examines auditing and enforcement support and operational support and technical services, with emphasis on distinguishing compliance audits, management-system audits, exposure-control verification, and due-diligence reviews. Further coverage addresses data, competence, and leadership influence, particularly avoiding the trap of becoming a reporting function without field verification or operational impact.

M30L3 – Integrated EHS Regulatory Environment
Study integrated EHS regulatory environment from the perspective of OSHA. The content brings together mapping the regulatory environment as overlapping worker-protection, environmental- protection, public-health, transportation, product, and security requirements and connecting OSHA obligations to industrial hygiene sampling, engineering controls, and written program management. Additional focus is placed on EPA, CDC / NIH / DHS, and NRC, with attention to addressing the interface between radiation protection, industrial hygiene, environmental release control, and emergency preparedness. The remaining discussion addresses state and local agencies, international / EU REACH considerations, and compliance management in practice, including emphasising regulator mapping, permit matrices, and site-specific compliance calendars for each facility.

M30L4 – People, Profit, and Planet
Examine the essential principles of people, profit, and planet, beginning with people. These areas involve defining the triple bottom line as a decision framework that balances worker well- being, organizational performance, and environmental stewardship and covering worker health, safety, exposure prevention, well-being, inclusion, and meaningful consultation. Attention then turns to planet and profit, with examples including how integrated EHS supports operational continuity, quality, asset reliability, insurance performance, and legal defensibility. The content also examines triple bottom line concepts in decision-making and metrics, reporting, and governance, with emphasis on incorporating stakeholder expectations from workers, regulators, investors, customers, communities, and insurers.

M30L5 – Resources, Funding Models, and Professional Certifications
Study resources, funding models, and professional certifications from the perspective of structure and resources of integrated EHS programs and staffing, competence, and technical capability. The material includes comparing centralized, site-based, business-unit, and hybrid program structures and addressing succession planning, mentoring, and continuing professional development. Further coverage addresses centralized funding and fee-for-service model, particularly defining fee-for-service as charging business units or projects for defined EHS services such as exposure monitoring, permitting support, audits, or specialist reviews. It then considers benchmarking and resource allocation and professional certifications in integrated EHS functions, including including the need to align credential expectations with actual role scope and jurisdictional needs. Additional focus is placed on building a sustainable professional capability model, with attention to encourage cross-training between environmental, industrial hygiene, safety, occupational health, and sustainability disciplines.

Module 31 - Government Regulations

M31L1 – Responsibilities Under Government Regulations
Build a clear understanding of responsibilities under government regulations by considering its purpose, scope, and principal concepts. The discussion covers the purpose of occupational safety and health regulation in preventing injury, illness, and long-latency disease and responsibility for foreseeable hazards in routine, non-routine, and emergency work. Attention then turns to key provisions of the OSH Act and General Duty Clause, with examples including the relationship between recognized hazards and industry knowledge, consensus standards, alerts, and prior incidents. The content also examines employer duties and employee duties, with emphasis on duty to furnish employment and a workplace free of recognized serious hazards. Further coverage addresses practical responsibility in industrial hygiene programs, particularly common failures such as assuming PPE alone satisfies the duty to control exposure.

M31L2 – Compliance Officers and Inspection Priorities
Study compliance officers and inspection priorities from the perspective of OSHA compliance safety and health officers. The discussion covers the importance of technical competence in industrial hygiene, sampling strategy, documentation, and legal sufficiency and referral to specialists for complex health hazards, catastrophic events, or process- specific issues. The remaining discussion addresses inspection priorities overview and imminent danger, including the importance of employer preparedness regardless of inspection trigger. Attention then turns to fatality and catastrophe and complaints and referrals, with examples including the importance of root-cause analysis beyond the immediate triggering event. The content also examines programmed inspections, with emphasis on the concept of programmed inspections for high-hazard industries, establishments, and strategic emphasis areas.

M31L3 – OSHA Reorganization, Reinvention, and Standards Structure
Understand OSHA reorganization, reinvention, and standards structure through a connected review of OSHA’s reorganization and reinvention and state plans. The material includes expansion of electronic record submission, digital publications, and web-based compliance tools and OSHA-approved State Plans as state or territorial occupational safety and health programs. The content also examines specification vs performance standards and vertical vs horizontal standards, with emphasis on vertical standards apply to a particular industry, operation, or process. Further coverage addresses standards structure and regulatory architecture and rulemaking milestones, particularly reviewing of evidence, economic and feasibility analysis, and issuance of a final rule. It then considers judicial and congressional challenges, including the need for practitioners to follow both the regulatory text and post-promulgation developments.

M31L4 – Hazard Communication Standards
Explore Hazard Communication Standards through hazard classification and GHS alignment. Key learning areas include core components: classification, labels, safety data sheets, written program, and training and hazard classification of physical and health hazards as the foundation of communication. Attention then turns to labels and other forms of warning and safety data sheets, with examples including sixteen-section SDS format and the critical information each section provides to users. The content also examines written hazard communication program and employee information and training, with emphasis on program review and updating when chemicals, processes, or classifications change. Further coverage addresses special hazard communication issues, particularly process-generated contaminants such as welding fumes, combustion products, silica, and by-products.

M31L5 – OSHA Inspection Process
Analyse OSHA inspection process by starting with OSHA inspections and preinspection planning. Attention is given to the role of industrial hygiene evidence in health-related inspections and internal employer preparation of records, written programs, exposure data, training logs, and corrective-action evidence. Further coverage addresses opening conference, walk-through inspection, and interviews and sampling, particularly systematic observation of operations, equipment, work practices, housekeeping, and visible hazards. It then considers safety and health program evaluation, closing conference, and citations, abatement, PMA, and violation types, including the importance of informal conferences, contests, settlement strategy, and sustainable corrective action.

M31L6 – Employer Health Programs and Health Standards
Gain a focused overview of employer health programs and health standards, with initial attention to employer’s occupational health programs and core elements of a health program. Key learning areas include using of written plans, schedules, and performance indicators to drive implementation and coordination with procurement, contractor management, and change management. The content also examines health standards and health standards strategy, with emphasis on the relationship between health standards and industrial hygiene judgment when standards are outdated or incomplete. Further coverage addresses generic standards and medical surveillance, exposure records, and confidentiality, particularly medical services and first aid requirements for timely response capability. It then considers implementation challenges and field pitfalls, including failure to monitor transient, maintenance, or contractor exposures.

M31L7 – NIOSH Functions and Programs
Understand NIOSH functions and programs through a connected review of NIOSH and testing and certification. The content brings together continued relevance of NIOSH in emerging hazards and future-of-work issues and the importance of certification knowledge in respiratory protection and procurement decisions. Further coverage addresses research, training, and recommendations for standards, particularly the importance of training pipelines for industrial hygiene, occupational medicine, nursing, and safety practice. It then considers field investigations and the health hazard evaluation program, national occupational research agenda, research-to-practice, and prevention through design, and total worker health and core NIOSH information products, including the importance of these initiatives for exposure prevention, capital projects, and procurement.

M31L8 – State Agencies and EPA Responsibilities
Examine the essential principles of state agencies and EPA responsibilities, beginning with state occupational safety and health agencies and state plan effectiveness requirement. Attention is given to the role of state and territorial agencies in administering occupational safety and health requirements within their jurisdictions and requirement that State Plans be at least as effective as federal OSHA. It then considers state and territorial coverage, introduction to EPA, and TSCA, including necessity of maintaining jurisdiction-specific compliance matrices. Additional focus is placed on RCRA, CERCLA / Superfund, and worker protection standard for agricultural pesticides and indoor air quality research and education, with attention to CERCLA authority for response to uncontrolled hazardous-substance releases and abandoned waste sites.

M31L9 – OSHA Publications, Consultation, and Worker Rights
Consider OSHA publications, consultation, and worker rights by first reviewing OSHA’s official publications and OSHA website. The discussion covers the role of publications in training, program development, inspection readiness, and field troubleshooting and OSHA website as the primary portal for standards, interpretations, enforcement directives, news, and compliance assistance. Further coverage addresses consultation program and voluntary protection programs (VPP), particularly requirement for strong system performance and favorable injury and illness metrics. It then considers employee rights and whistleblower protections, including right to a safe and healthful workplace and to receive required training and hazard information. Additional focus is placed on effective use of publications and rights in program implementation, with attention to linking consultation findings, VPP principles, and publication tools into continuous improvement systems.

Module 32 - International Developments in Occupational Safety and Health

M32L1 – Foundations and Background of GHS
Study foundations and background of GHS from the perspective of international developments in occupational safety and health and Globally Harmonized System of classification and labeling of chemicals (GHS). Key learning areas include chemical safety must function across workplaces, transport systems, consumer markets, and emergency response settings and countries and sectors adopt GHS through national legislation, standards, and guidance. Additional focus is placed on why GHS was needed and historical development of GHS, with attention to the “Purple Book” became the core reference and continues to evolve through periodic revised editions. The remaining discussion addresses foundational structure of GHS and scope, limits, and implementation realities, including how GHS improves hazard communication but does not replace exposure assessment, risk evaluation, or the hierarchy of controls.

M32L2 – Hazard Classification and Hazard Communication Under GHS
Build a clear understanding of hazard classification and hazard communication under GHS by considering hazard classification fundamentals and physical hazard classification. Key learning areas include recognising that classification drives downstream communication, training, storage, handling, and emergency planning and including gases under pressure, chemicals that emit flammable gas on contact with water, and corrosive to metals. It then considers health hazard classification, environmental hazard classification, and forms of hazard communication under GHS, including including aspiration hazard and the implications for medical response, storage, and worker training. Additional focus is placed on key label elements, safety data sheet format: headings 1–8, and safety data sheet format: headings 9–16, with attention to section 13: Disposal considerations. The remaining discussion addresses training, interpretation, and common field errors, including training workers to interpret labels and SDSs for routine tasks, abnormal conditions, and emergencies.

M32L3 – Additional Domestic Harmonization
The learning begins with harmonization strategy in practice to establish the basis for additional domestic harmonization. The content brings together how industrial hygienists need to understand where systems align, where they diverge, and how that affects compliance and starting with a verified product identity, hazard classification, intended use, and life- cycle pathway. The content also examines u.s. DOT and EPA, with emphasis on occupational pesticide protection links label compliance with handler protection, application practices, and worker notification. Further coverage addresses CPSC and managing products across regulatory contexts, particularly organizations must distinguish retail package requirements from workplace container requirements and training duties. It then considers common domestic harmonization problems, including how assuming a transport label alone is sufficient for workplace hazard communication.

M32L4 – Control Banding
Explore control banding through why control banding is used for chemicals without OELs. These areas involve controlling banding is a qualitative or semi-quantitative method for managing chemical risks when full exposure data are limited and organizations still must act on available hazard information rather than waiting for a complete OEL framework. Attention then turns to inputs to the banding process and banding frameworks and tools, with examples including task factors include duration, frequency, temperature, transfer method, maintenance work, and cleaning practices. The content also examines selection of control strategies and verification, validation, and follow-up, with emphasis on documentation should record the basis for the assigned band, selected controls, and review triggers. Further coverage addresses strengths, limitations, and common errors, particularly common mistakes include ignoring dermal exposure, treating the tool output as a final exposure verdict, and overreliance on PPE.

M32L5 – REACH
The learning begins with REACH and registration to establish the basis for REACH. Attention is given to it applies to substances on their own, in mixtures, and in some cases in articles and dossiers include substance identity, uses, physicochemical data, toxicological and ecotoxicological information, and safe-use measures. Additional focus is placed on evaluation and authorization, with attention to how authorization is aimed at substances of very high concern and encourages substitution with safer alternatives. The remaining discussion addresses restriction and downstream user obligations, including they must keep records, communicate relevant safe-use information, and report to authorities in specific cases. Attention then turns to REACH in occupational hygiene practice, with examples including extended SDSs should be reviewed against actual tasks, quantities, duration, and engineering controls.

M32L6 – Occupational Health and Safety Management Systems
Examine the essential principles of occupational health and safety management systems, beginning with core system architecture. Attention is given to an OHS management system converts legal duties and technical controls into a structured, auditable management process and preparing for emergencies, incidents, abnormal conditions, and business continuity issues. The remaining discussion addresses worker participation and organizational learning, voluntary protection program (VPP), and ANSI z10, including leadership commitment must be matched by meaningful worker consultation and participation. Attention then turns to ISO 14000, OHSAS 18000 series, and current evolution of OHS management systems, with examples including OHSAS 18001 historically served as a widely used OH&S management system reference before ISO 45001.

Module 32 - History of OSHA

M33L1 – Pre-OSHA Era and Enactment of the OSH Act
Review the main elements of pre-OSHA era and enactment of the OSH Act, starting with why OSHA history matters and early legislation and the pre-OSHA era. The content brings together shift from reacting to accidents toward prevention of illness, impairment, and death and limits of fragmented regulation for mobile industries, interstate commerce, and modern hazards. It then considers the public health and industrial hygiene problem before 1970 and political and legislative path to the OSH Act, including employer duties, worker rights, and the General Duty Clause as core statutory architecture. Additional focus is placed on the structure of the OSH Act and industrial hygiene implications of the act’s enactment, with attention to enduring tension between standard-setting, feasibility, and health protection.

M33L2 – OSHA’s First Two Years
Review the main elements of OSHA’s first two years, starting with launching the new agency and standards in the first two years. These areas involve establishing field offices, compliance officer roles, and early operating procedures and congressional mandate to adopt existing federal and consensus standards quickly. The content also examines administration and agency building and federal employee program, with emphasis on creation of inspection systems, citation processes, penalty policies, and appeals pathways. Further coverage addresses interagency cooperation and early operational challenges, particularly employer unfamiliarity with federal inspection authority and worker complaint rights.

M33L3 – 1973–1976: OSHA Continues to Grow
Consider 1973–1976: OSHA continues to grow by first reviewing the agency continues to grow and OSHA’s first transition. Attention is given to development of more systematic targeting of high-risk industries and processes and tension between political oversight, enforcement intensity, and the pace of rulemaking. Attention then turns to the kepone incident and growth in standard-setting and enforcement, with examples including increasing use of original OSHA standards rather than only inherited consensus rules. The content also examines review commission and federal court decisions and interagency relationships, with emphasis on coordination with other federal agencies when hazards crossed program boundaries. Further coverage addresses amendments, riders, and oversight, particularly how political oversight affected staffing, inspection numbers, and rulemaking capacity.

M33L4 – 1977–1980: Bingham Era
Explore 1977–1980: Bingham era through Bingham emphasizes health and safety and OSHA’s second transition. The material includes increased reliance on science, industrial hygiene, and worker health evidence and how increased visibility of labor support and business opposition. The content also examines regulation of toxic substances and field enforcement and new directions in health enforcement, with emphasis on major rules and initiatives involving cotton dust, lead, benzene, and related toxic hazards. Further coverage addresses the cotton dust case and related judicial and congressional pressures, particularly lasting effect of 1977–1980 decisions on how OSHA would justify future health rules.

M33L5 – 1981–1992: A Period of Change
Explore 1981–1992: a period of change through OSHA’s third transition. The content brings together continuing tension between statutory duties and administrative restraint and gradual movement from broad mandates to more targeted and performance-oriented approaches. Attention then turns to OSHA at its lowest ebb and OSHA and the bush administration, with examples including incremental rebuilding of credibility through selective enforcement and modernized rules. The content also examines field operations and standard setting continue and Hazard Communication Standard and the right to know, with emphasis on increasing use of injury records and hazard data for inspection targeting. Further coverage addresses judicial and legislative developments affecting standard setting, particularly continued significance of Benzene and Cotton Dust decisions in defining significant risk and feasibility.

M33L6 – 1993–2000: The OSHA of the Future
Gain a focused overview of 1993–2000: the OSHA of the future, with initial attention to OSHA till 2000: strategic reorientation and OSHA’s fourth transition. Key learning areas include integration of enforcement, outreach, training, and partnerships into one policy model and internal reorganization of area offices and complaint-handling processes. The content also examines new leadership, new initiatives and standard setting, regulatory reform, and reinvention, with emphasis on phone-fax complaint system and more rapid response mechanisms. Further coverage addresses new directions in enforcement and the occupational injury and illness burden continues, particularly persistent burden of fatalities, musculoskeletal disorders, chemical exposures, and chronic disease.

M33L7 – 2001–2008: OSHA in the New Century
Gain a focused overview of 2001–2008: OSHA in the new century, with initial attention to OSHA’s fifth transition. Attention is given to entry into a post-2000 environment shaped by terrorism, disaster response, and globalized work and greater emphasis on compliance assistance, alliances, and targeted enforcement rather than sweeping new mandates. Further coverage addresses september 11, disaster response, and recovery work and recordkeeping reform and the early 2000s, particularly exposure monitoring, PPE selection, decontamination, and medical follow-up in disaster zones. It then considers steel erection, shipyard fire protection, and payment for PPE and hexavalent chromium and health standard-setting, including practical implications for hazard assessment, procurement, and training. Additional focus is placed on alliances, cooperative programs, and enhanced enforcement, with attention to how growth of alliances, partnerships, and VPP as non-rulemaking influence tools.

M33L8 – 2009–2016: Enforcement, Prevention, and Major Rulemaking
Develop a structured understanding of 2009–2016: enforcement, prevention, and major rulemaking by examining enforcement, prevention, and major rulemaking overview and OSHA’s sixth transition. The content brings together stronger alignment of industrial hygiene evidence with enforcement priorities and increased use of injury and illness data, public communication, and worker-facing outreach. Additional focus is placed on deepwater horizon and emergency response and severe violator enforcement program and targeted enforcement, with attention to exposure concerns involving hydrocarbons, dispersants, heat stress, fatigue, and vessel safety. The remaining discussion addresses fall prevention, reporting reform, and national campaigns and hazard communication 2012 and global harmonization, including alignment of the Hazard Communication Standard with the Globally Harmonized System. Attention then turns to confined spaces, silica, beryllium, and other major standards, with examples including the need for air sampling, medical surveillance, engineering controls, and exposure records.

M33L9 – 2017–2020: Transition, Continuity, and New Challenges
Build a clear understanding of 2017–2020: transition, continuity, and new challenges by considering OSHA’s seventh transition. These areas involve change in political leadership with partial continuity in core enforcement and recordkeeping functions and persistence of site inspections, serious-case enforcement, and existing campaigns. The remaining discussion addresses standards maintenance, compliance assistance, and deregulatory pressures and data, young worker outreach, and new communication strategies, including young worker initiatives such as summer-job safety campaigns. Attention then turns to COVID-19 begins: guidance, respirators, and the historic 2020 response and lessons from 2017–2020, with examples including need to distinguish temporary crisis guidance from permanent enforceable standards.

M33L10 – 2021–2026: Pandemic Rulemaking, Heat, and OSHA’s Next Era
Examine the essential principles of 2021–2026: pandemic rulemaking, heat, and OSHA’s next era, beginning with OSHA’s eighth transition. Key learning areas include the need for stronger documentation, communication, and inspection practice in rapidly changing conditions and leadership changes as a factor in emphasis, pace, and management style rather than statutory mission. It then considers COVID-19 healthcare ETS and the vaccination-and-testing ETS, from COVID rulemaking to termination of the healthcare rulemaking, and heat initiative, heat NEP, and the proposed heat standard, including end of disease-specific healthcare rulemaking in favor of broader infectious-disease rulemaking. Additional focus is placed on SVEP revision, instance-by-instance citations, and enforcement priorities, walkaround representation and inspection practice, and hazard communication 2024 update and the 2026 compliance extension, with attention to continued coexistence of old and updated compliance approaches during the extension period. The remaining discussion addresses leadership change in 2025 and OSHA’s direction in 2026, including transition from Douglas Parker to acting leadership and then to Assistant Secretary David Keeling.

Certified Industrial Hygiene Professional (CIHP)

This course includes:

45.5 hours on-demand video

675 downloadable resources

Full lifetime access with updates

Accrevia Certificate of Completion

What you'll learn

Requirements

Who this course is for

Students, Fresh Graduates & Early-Career Learners

EHS, Safety & Compliance Professionals

Occupational Medicine, Nursing & Clinical Support

Industrial Hygiene & Occupational Health Experts

Engineering, Operations & Maintenance Teams

Consultants, Auditors & Industrial Hygiene Teams

Course Description

Course Outline

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