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Enclosed Space Entry, Awareness

CBT 30 questions

First 5 of 30 questions — with answers

The correct answer is marked. Unlock the rest to study the whole test, online or offline.

  1. Question 1

    According to IMO guidelines, how much oxygen, by volume, is required for entry into an enclosed space?
    • 21 %.
    • 15 %.
    • 16 %.
    • 18 %.

  2. Question 2

    According to IMO guidelines, if the atmosphere in an enclosed space is suspect, then ...
    • Entry should only be made for essential operation, further testing, safety of life or safety of the ship.
    • Entry can only be made provided there is no flammable gas.
    • Entry can only be made provided there is no toxic gas.
    • No entry is allowed under any circumstances.

  3. Question 3

    According to the IMO, which one of the following options best completes the following statement an enclosed space is one which might have any of the following characteristics:
    • ... limited openings for entry and exit, inadequate ventilation or is not designed for continuous worker occupancy.
    • ... has only one opening and is bounded by steel bulkheads and deckheads.
    • ... is kept locked, with a warning sign posted.
    • ... is not open to the atmosphere or is used as a store.

  4. Question 4

    How can the presence of toxic gasses in an enclosed space be detected?
    • Selective tests have to be carried out with knowledge of which toxic products have previously been in the space.
    • Test for flammable gasses. If there are no flammable gasses and no bad smells, the space should be safe.
    • Test for oxygen. Provided there is enough oxygen, and no bad smells, the space should be safe.
    • Use a personal monitor, calibrated for carbon monoxide or hydrogen sulphide.

  5. Question 5

    If the ventilation fails whilst you are working in an enclosed space, what should you do?
    • Leave the space immediately and ensure everyone else does the same.
    • Carry on working as long as your gas alarm does not sound.
    • Ensure someone is regularly checking the atmosphere.
    • Report the ventilation failure, but carry on working if the atmosphere is still safe.

Preview — 5 of 30 questions

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About this CBT test

Enclosed Space Entry, Awareness is a CBT test with 30 questions and verified answers. Common topics include: space, gas, toxic, imo, flammable, attendant, entry, doubt.

You can practise the free questions online — one at a time, with the correct answer — or unlock the whole test and download it to study offline, without internet.

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