Exams / HS&E TUNN / Air, gases and confined spaces / Question 1
HS&E TUNN practice question: Air, gases and confined spaces (1 of 6) E. Specialist: Tunnelling A free question from our original HS&E TUNN 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 worker collapses at the bottom of a shaft that is a confined space. Two workmates want to climb straight down to help.
What does HSE warn?
Choose one answer.
A A. They will be fine if they hold their breathB B. They should go in one after the otherC C. Rescuers can be overcome tooD D. The quicker they go in, the safer it isShow the answer and explanation Answer: C
A. Wrong: Wrong. That is not a safe rescue.B. Wrong: Wrong. Follow the planned emergency arrangements.C. Right: Right. HSE gives the example of two people who went in to save a worker and were both overcome. Don't enter until you are sure it is safe.D. Wrong: Wrong. Bad air can overcome rescuers in seconds.Explanation Don't rush in to rescue someone from a confined space. Use the planned rescue arrangements.
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