Health, Safety, and Environmental Practice
Health, Safety, and Environmental Practice
This domain tests whether you can recognise hazards, apply the correct control philosophy, and meet reporting and due-diligence obligations.
Core rules and concepts
- Hierarchy of controls, in order: eliminate, substitute, engineering controls, administrative controls, personal protective equipment. PPE is the last line, never the first.
- Risk = likelihood x severity. Reduce risk to as low as reasonably practicable and document the residual risk and its acceptance.
- Hazard identification uses job hazard analysis, HAZOP for process plant, inspections, and near-miss reporting.
- Due diligence requires a documented system that is actually enforced - training records, inspections, corrective actions - not a policy binder.
- Preserve the scene after a serious incident, report to the regulator within the legislated time, and notify the insurer.
- Controls you must know: lockout/tagout, confined-space entry permits, hot-work permits, excavation shoring and locating, WHMIS/GHS labels and safety data sheets.
- Environmental duties: screening and assessment thresholds, spill reporting, waste manifests, monitoring and records.
- Incident investigation seeks root cause - 5 Whys, fishbone - and verifies corrective actions took effect.
Worked example
A worker falls from a scaffold. Immediate actions: first aid, secure the scene, notify the regulator within the required hours, notify the insurer. The investigation asks whether the scaffold was tagged, whether guardrails were missing, whether inspection records were current, and whether the worker was trained. The root cause is likely a management-system failure in inspection and tagging, not 'carelessness'. Corrective actions address the tagging system, daily inspection logs, and competence checks, then are verified.
Traps
Blaming the injured worker; treating PPE as the primary control; dismissing near misses; late regulator notification; letting the scene be cleaned before investigation.