Exams / HS&E RAAC / Pressure, gases and plant rooms / Question 5
HS&E RAAC practice question: Pressure, gases and plant rooms (5 of 5) E. Specialist: HVACR – refrigeration and air conditioning A free question from our original HS&E RAAC 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 plant room in a basement is small, enclosed and has poor ventilation.
Which danger does HSE list for confined spaces?
Choose one answer.
A A. Getting lost in the corridorsB B. Not enough oxygen to breatheC C. Too much natural daylightD D. Sore feet from standingShow the answer and explanation Answer: B
A. Wrong: Wrong. HSE lists lack of oxygen.B. Right: Right. HSE lists reduced oxygen levels among the dangers of confined spaces, with fumes, flooding and fire.C. Wrong: Wrong. HSE lists lack of oxygen.D. Wrong: Wrong. HSE lists lack of oxygen.Explanation Enclosed spaces can lack oxygen. Avoid entry where possible and plan the controls.
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