Exams / HS&E PLUM / Other hazards on plumbing jobs / Question 3
HS&E PLUM practice question: Other hazards on plumbing jobs (3 of 6) E. Specialist: Plumbing (JIB) A free question from our original HS&E PLUM practice exam. Try it, then open the answer to see why each option is right or wrong.
Last verified October 2026 against HSE guidance and the law ·How we write our questions
A blockage needs clearing in a deep, unventilated drainage chamber.
What does HSE say first?
Choose one answer.
A A. Go in if you can't smell anythingB B. Avoid going in if it can be done from outsideC C. Send in the smallest worker, with a torch and a ropeD D. Go in quickly and hold your breathShow the answer and explanation Answer: B
A. Wrong: Wrong. Dangerous gases and lack of oxygen can't always be smelled.B. Right: Right. HSE says avoid entering a confined space if the work can be done another way, for example from outside.C. Wrong: Wrong. Size doesn't protect against gas or lack of oxygen.D. Wrong: Wrong. Bad air can overcome you in seconds.Explanation Avoid entering confined spaces where you can. If entry is needed, follow a safe system of work.
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