IG MARITIMEMade by Seafarers for Seafarers

All international training tests on IG MARITIME are free for every seafarer. Register once to save your progress and prepare for your next voyage without limits!

CD7033. TOTS 1B-Enclosed Spaces and Tank Atmosphere..

Search this section

Choose a question set and start learning or take an exam.

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 — CD7033. TOTS 1B-Enclosed Spaces and Tank Atmosphere..” contains 19 questions across 1 collection.

Learning

Learning mode has no timer. After answering, you see feedback and the correct options. You can return to a question and repeat a topic.

Exam

A practice exam lasts up to 60 minutes and includes up to 50 questions from the selected collection. Correct answers and results appear after completion.

Sample questions and answers

These examples come from the published collection. Choose Learning to study questions in sequence, or Exam to check your knowledge.

Why could an unventilated ballast tank fitted with Cathodic Protection contain a hazardous atmosphere?

One correct answer

  • Because hydrogen is produced by the Cathodic Protection.✓ Correct answer
  • Because the Cathodic Protection could produce an oxygen enriched atmosphere.
  • Because hydrocarbons could be produced by the Cathodic Protection.
  • Because the Cathodic Protection would increase the level of nitrogen in the atmosphere.
For what purpose would you use a personal gas detector?

One correct answer

  • To monitor atmospheric conditions during an enclosed space entry.✓ Correct answer
  • To test an enclosed space before starting hot work.
  • To check the atmosphere of an enclosed space before entry.
  • To test the atmosphere of an open space before starting hot work.
What actions must be taken to isolate a tank before entry?

One correct answer

  • Blank off the pipelines to the tank, close and secure all valves and inform the Officer of the Watch.✓ Correct answer
  • Request the Officer of the Watch to stop all cargo and ballast pumps.
  • Stop all cargo and ballast operations.
  • Stop all ventilation and inform the Officer of the Watch.
What equipment is required to be kept at the entrance of an enclosed space during entry?

One correct answer

  • A resuscitator, breathing apparatus, a lifeline and a harness, a torch or a lamp.✓ Correct answer
  • Spare tools and parts for the work being undertaken.
  • A resuscitator or escape breathing set.
  • Enough escape breathing sets for all personnel in the space.
Why could an unprotected steel space, which has been closed, produce a hazardous atmosphere?

One correct answer

  • Because oxygen in the atmosphere may be depleted by reacting with the steel (i.e. corrosion).✓ Correct answer
  • Because the level of nitrogen in the atmosphere would be increased by corrosion.
  • Because toxic gases may be given off by the process of corrosion.
  • Because hydrocarbons could be liberated from rust scale in the tank.

Before you start

Do I need to register to start?

Guest access lasts 23 minutes. Free registration lets you continue without limits, save progress and review mistakes in your account.

What language are the questions in?

Questions and answer options retain the language of the original bank. You can change the interface language separately.

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.