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CD4102. Tank Cleaning 2, Principles of Tank Cleaning

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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 — CD4102. Tank Cleaning 2, Principles of Tank Cleaning” contains 12 questions across 1 collection.

Learning

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Sample questions and answers

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What will be the normal pressure when cleaning with dual nozzle tank cleaning machines?

One correct answer

  • 4-6 bar
  • 6-8 bar
  • 8-10 bar✓ Correct answer
  • 10-12 bar
You are going to wash cargo tanks after unloading Heavy Fuel Oil with a pour point of 43°C. What should be the initial washing water temperature?

One correct answer

  • 35°C
  • 45°C
  • 60°C✓ Correct answer
  • 80°C
You are discharging Fuel Oil with a Specific Gravity of 0.85 direct to the sea. What will you expect to happen?

One correct answer

  • The oil will be diluted by the sea water
  • The oil will evaporate
  • The oil will sink
  • The oil will float✓ Correct answer
The tank washing principle wet-in-wet means

One correct answer

  • Before cleaning with chemicals you must flush the cargo tank bottom
  • Initial tank washing shall start as soon as possible to avoid cargo residues to dry up.✓ Correct answer
  • It is not possible to ventilate the tanks due to a high dew-point
  • Cleaning of cargo lines must be done simultaneously with washing of cargo tanks
What is the pour point

One correct answer

  • The lowest temperature at which the product can be ignited
  • The lowest temeprature where it is possible to remove the product by ventilation
  • The lowest temperature at which a liquid will flow✓ Correct answer
  • The lowest temperature where the product can give off vapour

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