Workplace Safety and Environmental Practices
Safety in an engineering workshop rests on a hierarchy of control: eliminate the hazard first, then substitute, engineer it out (guards, extraction), apply administrative controls (procedures, signage, training), and use personal protective equipment (PPE) as the last line of defence. Candidates must know the purpose of a Job Safety Analysis (JSA) or Safe Work Method Statement (SWMS), the meaning of a hazard versus a risk, and standard workshop rules: housekeeping, clear walkways, correct manual handling, machine guarding, lockout/tagout before maintenance, and emergency procedures including first aid and evacuation.
Environmental practice covers waste segregation (swarf, coolant, solvents, plastics, metals), correct disposal of oily rags, spill kits, and the environmental harm of pouring coolant or solvents to drain. Understand Material Safety Data Sheets (now Safety Data Sheets) and how they inform handling and storage.
Traps: confusing hazard (source of harm) with risk (likelihood and severity of harm); assuming PPE removes a hazard (it only reduces exposure); forgetting that guards must not be removed for convenience; and overlooking that near misses should be reported.
Rule of thumb: if you cannot answer 'what could go wrong, how bad, and how likely?' for a task, stop and complete a JSA before starting. Worked example: a task producing fine aluminium dust scores high risk because dust is both a health hazard (inhalation) and a fire/explosion hazard; controls run from local exhaust ventilation (engineering) to respirators (PPE), not the reverse.