Work Health and Safety in Plumbing
The framework you must know
Work health and safety in plumbing rests on a hierarchy of control: eliminate the hazard, then substitute, then engineer controls (guards, ventilation, isolation), then administrative controls (procedures, signage, training), and only last personal protective equipment. Questions often present a scenario and ask for the highest control available - PPE is almost never the right answer when a higher-order control exists. Know the difference between a hazard (a thing with potential to harm) and a risk (the likelihood and consequence of that harm).
Core duties and documents
Understand duty holders: the person conducting a business or undertaking (PCBU), officers, workers, and other persons at the workplace. Workers must take reasonable care for their own and others' safety, follow instructions, and report hazards and incidents. Know what a safe work method statement (SWMS) is for high-risk construction work, when a job safety analysis or pre-start check applies, and the purpose of a material safety data sheet (SDS) - hazard identification, first aid, storage incompatibilities, and PPE.
High-risk plumbing hazards
Confined spaces (pits, tanks, sewers) require atmospheric testing, a standby person, and a permit; never treat "it smells fine" as evidence. Other recurring hazards: falls from ladders and roofs, manual handling of cylinders and pipe bundles, electrical risk near water and metallic pipe, silica dust from cutting, lead and solvent vapour exposure, and trench collapse. Know lock-out/tag-out and isolation-before-work principles.
Traps and a worked rule
Common traps: confusing a hazard with a risk; selecting PPE as a control; forgetting emergency and incident notification duties; assuming a supervisor's presence transfers responsibility away from the worker. Rule of thumb for controls: if a question offers both an engineering fix and a procedural fix for the same hazard, choose the engineering fix - it protects everyone without relying on memory or discipline.