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!

CD7013. TOTS 1A-The Flammability Diagram

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 — CD7013. TOTS 1A-The Flammability Diagram” contains 44 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.

What is the current deadweight, above which tankers must be fitted with an inert gas system?

One correct answer

  • 20000 tonnes.✓ Correct answer
  • 15000 tonnes.
  • 2000 tonnes.
  • 50000 tonnes.
What is the relative density of hydrocarbon gas at concentrations near the Lower Flammable Limit?

One correct answer

  • Approximately 1.0, the same as air.✓ Correct answer
  • Approximately 1.5, heavier than air.
  • Approximately 0.7, lighter than air.
  • Approximately 2.0, much heavier than air.
It is generally accepted that an atmosphere with less than 11% oxygen cannot burn. Why is the figure of 8% usually specified as the maximum oxygen content of a cargo tank?

One correct answer

  • To allow a safety margin.✓ Correct answer
  • Because gas detection equipment is not accurate enough.
  • Because hydrocarbon gas will be produced during cargo operations.
  • To allow for operator error using the equipment.
The characteristics of the vapours given off by crude oil can be represented by those of propane. What is the relative density of propane?

One correct answer

  • 1.55✓ Correct answer
  • 0.55
  • 1.00
  • 5.50
What is meant by the "Displacement" method of inerting cargo tanks?

One correct answer

  • The inert gas is introduced slowly at the top of the tank so that a stable horizontal interface is formed.✓ Correct answer
  • The inert gas is introduced slowly at the bottom of the tank so that a stable horizontal interface is formed.
  • The inert gas is mixed with fresh air, and introduced rapidly into the tank.
  • The incoming inert gas is mixed with the tank atmosphere to form a homogenous mixture throughout 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.