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HS&E PFW practice question: Hot work, cylinders and pressure (1 of 5)

E. Specialist: HVACR – pipefitting and welding A free question from our original HS&E PFW practice exam. Try it, then open the answer to see why each option is right or wrong.

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An acetylene cylinder has been heated in a fire. A worker wants to open the valve to let the pressure out.

What does HSE say?

Choose one answer.

  1. A. Don't try to vent it or move it anywhere
  2. B. Vent it straight away to stop it bursting
  3. C. Roll it outside, then vent it
  4. D. Cool it down and put it back in the store
Show the answer and explanation

Answer: A

  • A. Right: Right. HSE strongly advises not to move a heated acetylene cylinder or try to release its pressure. Evacuate 200 metres and call the fire service.
  • B. Wrong: Wrong. HSE says don't try to vent it.
  • C. Wrong: Wrong. HSE says don't try to move it.
  • D. Wrong: Wrong. Keep clear and leave it to the fire service.

Explanation

A heated acetylene cylinder: don't move or vent it. Clear 200 m and call the fire service.

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