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CD0285. Enclosed space entry, Awareness

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About this collection

The Seagull CBT bank is organised into modules covering safety, shipboard operations, maintenance and other topics. Original module names and codes are retained to help you find the topic you need.

“Seagull CBT — CD0285. Enclosed space entry, Awareness” contains 30 questions across 1 collection.

Learning

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Sample questions and answers

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What is the maximum level of flammable gas allowed for safe entry into an enclosed space?

One correct answer

  • 1% of the lower flammable limit.✓ Correct answer
  • 50% of the lower flammable limit
  • 1% by volume.
  • 10% of the lower flammable limit.
Stagnant water, some sewage systems and some oil cargoes can all be the source for a gas which is both flammable and toxic. This gas is:

One correct answer

  • Hydrogen sulphide.✓ Correct answer
  • Nitrogen.
  • Hydrogen chloride.
  • Carbon dioxide.
Vehicle and diesel engine exhausts can be the source for toxic gas. This gas is:

One correct answer

  • Carbon monoxide.✓ Correct answer
  • Nitrogen.
  • Hydrogen chloride.
  • Hydrogen sulphide.
What is the main role of the attendant outside an enclosed space?

One correct answer

  • To remain at the entrance to the space, keep in contact with those in the space, and raise the alarm if there are any signs of danger.✓ Correct answer
  • To be available to immediately go in and get anyone out if they become ill.
  • To close the entrance once the team have entered the space and open it up again once they are ready to leave.
  • To pass tools or cleaning materials down into the space and help remove any cargo residues.
How can the presence of toxic gasses in an enclosed space be detected?

One correct answer

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

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Can I use my result as an official document?

No. This is independent practice. A result does not replace an examination, certificate or knowledge check by an authorised organisation.