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Hydrogen Sulphide Awareness

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About this collection

MINTRA CET includes short topic-based sets such as incident investigation, accommodation safety, anchoring operations and firefighting. Study an individual module, then review your mistakes in your account.

“MINTRA CET — Hydrogen Sulphide Awareness” contains 18 questions across 1 collection.

Learning

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Exam

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Sample questions and answers

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

Select the answer that apply. The long-term exposure limit for hydrogen sulphide is ____, averaged over an ____ reference period.

One correct answer

  • 5 ppm … 8-hour.✓ Correct answer
  • 15 ppm … 11-hour.
  • 50 ppm … 8-hour.
  • 10 ppm … 11-hour.
Where there is a potential risk of ____ to significant levels of ____ on oil and chemical tankers, the ship operator or owners are required to ____ the risk and put a contingency plan in place to ____ the identified risks.

One correct answer

  • … exposure … H2S … assess … manage.✓ Correct answer
  • … exposure … H2O … assess … manage.
  • … increase … H2S … consuming … manage.
  • … equipment … H2O … assess … increase.
Select the graphics that represent the characteristics of hydrogen sulphide:

Multiple correct answers

  • Heavier than air.✓ Correct answer
  • Flammable.✓ Correct answer
  • Burns with a blue flame.✓ Correct answer
  • Lighter than air.
  • Burns with a green flame.
Which of the following items of Personal Protective Equipment (PPE) are required when working in areas where personnel may be exposed to hydrogen sulphide?

Multiple correct answers

  • Waterproof, chemical resistant coveralls.✓ Correct answer
  • Waterproof, chemical resistant gloves.✓ Correct answer
  • Waterproof, chemical resistant boots.✓ Correct answer
  • Protective goggles.✓ Correct answer
  • Welding mask.
  • Ear plugs.
You may be able to detect a “rotten egg” smell at this stage, but this may disappear after a time as your sense of smell is damaged. Which H2S level?

One correct answer

  • 0-10.✓ Correct answer
  • 50-100.
  • 320-530.

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