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CD4103. Tank Cleaning 3, Planning of Tank Cleaning Operations

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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 — CD4103. Tank Cleaning 3, Planning of Tank Cleaning Operations” contains 12 questions across 1 collection.

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Sample questions and answers

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Why should hand spraying with chemical be avoided

One correct answer

  • It is not a good cleaning method
  • The amount of cleaning chemicals to be used is too high
  • It is prohibited by ISGOTT and Tanker safety Guide Chemicals
  • For safety reasons✓ Correct answer
The duration of the tank washing depends on : (More than one alternative may be correct)

Multiple correct answers

  • Viscosity of the product unloaded✓ Correct answer
  • The type and condition of the coating✓ Correct answer
  • Washing water temperature✓ Correct answer
When washing with warm water, the washing temperature is normally between

One correct answer

  • 10-20°C
  • 20-30°C
  • 30-60°C✓ Correct answer
  • 60-80°C
What is meant by the phrase "tank history"

One correct answer

  • Number of times the tank has been recoated
  • A description of the last three tank cleaning operations
  • The tank coating age
  • A list of the last three cargoes carried in the tank✓ Correct answer
When washing after a flammable cargo in a non inerted cargo tank, warm water wash should be preceded by a cold water wash. Why?

One correct answer

  • To avoid low pressure in the cargo tank
  • In order to protect the coating
  • To control the sources of ignition✓ Correct answer
  • To avoid excessive vapour pressure

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