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EN-TK

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About this collection

The ANR bank contains many sets with original names and codes, including navigation, safety and equipment topics. Select a module by name or use question search.

“ANR — EN-TK” contains 8 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.

Why is gas-freeing rarely required for LPG cargo tanks?

One correct answer

  • LPG is compatible with all cargos.
  • LPG's high oxygen content makes it nonvolatile.
  • Cargo tanks are inspected less frequently than on oil tankers.
  • The cargo tanks are used for one type of cargo only✓ Correct answer
  • 1
Which of the following would not introduce gas into a gas free cargo tank?

One correct answer

  • When a valve is opened.
  • When sludge is disturbed.
  • When a cargo pump is opened up.
  • When the tank lid is opened.✓ Correct answer
  • 1
Which statement about inert gas pressures in a cargo tank is TRUE?

One correct answer

  • The pressures of the inert gas in the tank may create excessive pressure at the pump while discharging.
  • Gas pressures should be maintained at the highest permissible level throughout the discharging process✓ Correct answer
  • High gas pressures may cause pyrophoric oxidation in the tank.
  • High gas pressures may cause loss of suction when stripping.
  • 1
Who certifies that a space is gas-free and safe for hot or cold work?

One correct answer

  • The bosun.
  • The captain.
  • A responsible officer.✓ Correct answer
  • An experienced AB.
  • 1
An inert gas system installed on a tanker is designed to

One correct answer

  • aid in the stripping and cleaning of cargo tanks
  • increase the rate of discharge of cargo
  • force toxic and explosive fumes from a cargo tank to vent to the outside atmosphere
  • lower the oxygen levels inside cargo tanks, making explosion nearly impossible✓ Correct answer
  • 1

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