Health, Safety and Welfare on Plumbing Sites
This domain tests whether you can plan plumbing work so that nobody is harmed, and whether you can justify site decisions with the legal duties behind them. Expect questions that put you in a real situation - a hot-work task in an occupied house, a cylinder to move upstairs, a pit to enter - rather than asking you to quote legislation.
Duties and documents
Under the Safety, Health and Welfare at Work Act 2005 employers must prepare a written Safety Statement and carry out risk assessments; employees must cooperate, report hazards and use PPE correctly. A risk assessment records the hazard, who is at risk, likelihood and severity, existing controls and residual risk.
Hierarchy of control
Eliminate, substitute, engineer, administrate, then PPE. PPE is the last line of defence and should never be the first control offered in an answer.
Plumbing-specific hazards
- Hot works: permit to work, combustibles removed, heat mat, correct extinguisher, fire watch of at least 60 minutes after the last flame.
- Confined spaces: tanks, sumps and poorly ventilated plant rooms - test, ventilate, use a rescue plan, never work alone.
- Hazardous substances: flux, solvent cement, descaler, lead, asbestos in older buildings; consult the safety data sheet before use.
- Welfare: drinking water, washing facilities, toilets and rest breaks are legal requirements on site.
Worked example
Solder a joint in a furnished bedroom. Hazards: flame and sparks near textiles, fume, burns. Controls: clear the area, heat mat, open window and ventilate, hot-work permit, extinguisher at hand, fire watch for 60 minutes, occupant informed, safety data sheet available. Residual risk is low and the assessment is signed and kept.
Traps that cost marks
Offering PPE as the first control; signing a permit without arranging the fire watch; drilling a wall without checking for concealed services or asbestos; assuming a small injury needs no recording.