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CD0360. Crude oil tankers, Control of flow rates during loading

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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 — CD0360. Crude oil tankers, Control of flow rates during loading” contains 14 questions across 1 collection.

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Sample questions and answers

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According to SOLAS, who should control closing and opening of the valves on the inert gas distribution line? Select the ONE correct answer.

One correct answer

  • The officer in charge of the cargo transfer✓ Correct answer
  • The Master, or the appointed deputy if ashore
  • The duty rating when checking for cargo leaks on deck
  • The Chief Engineer or the appointed deputy
During loading, which of the following must be monitored particularly closely while venting through a terminal’s vapour return line? Select the TWO correct answers.

Multiple correct answers

  • Cargo tank vapour pressure✓ Correct answer
  • Cargo loading rate✓ Correct answer
  • Cargo vapour temperature increase
  • Vapour growth in the cargo tank
Which of the following factors are used to determine the size and venting capacity of a cargo oil tank pressure-vacuum valve? Select the TWO best answers.

Multiple correct answers

  • The design loading rate✓ Correct answer
  • Vapour growth during loading✓ Correct answer
  • The height of the pressure-vacuum valve above the deck
  • The horizontal distance between the inert gas inlet and the pressure/vacuum valve
How can the contents of a cargo tank that is not being loaded be checked to see whether or not the ullage is changing during loading? Select the TWO best answers.

Multiple correct answers

  • Set the high and low level alarm close to either side of the ullage of the tank and monitor closely✓ Correct answer
  • Check that any ullage change can be explained by changes in trim, list or temperature✓ Correct answer
  • Check that the loading rate for the tank is always shown as zero on the on-line loading instrument
  • Check to see that the ullage remains constant; any change would indicate tank leakage
During loading, there is a small but continuous change in the ullage of a filled tank not involved in the loading operation. What is the most likely cause? Select the ONE best answer.

One correct answer

  • The hydraulic suction valve for the tank has crept open very slightly✓ Correct answer
  • There has been an increase in cargo temperature
  • There has been a change of trim
  • There has been a change of list

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