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HS&E MAP practice question: Confined spaces (2 of 4)

D. High risk activities A free question from our original HS&E MAP practice exam. Try it, then open the answer to see why each option is right or wrong.

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Tests show the oxygen level is low inside a tank your team must enter.

What does HSE say?

Choose one answer.

  1. A. Provide breathing apparatus or ventilate the space before entry
  2. B. Go in quickly, as low oxygen takes hours to harm you
  3. C. Use a dust mask
  4. D. Only enter if the worker feels fine
Show the answer and explanation

Answer: A

  • A. Right: Right. HSE says if there is not enough oxygen, provide breathing apparatus or ventilate the space before anyone enters.
  • B. Wrong: Wrong. Low oxygen can make you collapse within moments.
  • C. Wrong: Wrong. A dust mask doesn't supply oxygen.
  • D. Wrong: Wrong. You can't sense low oxygen until it is too late.

Explanation

If a confined space lacks oxygen, ventilate it or provide breathing apparatus before entry.

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