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CD7055. TOTS 1C-Operation, monitoring, machinery

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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 — CD7055. TOTS 1C-Operation, monitoring, machinery” contains 76 questions across 1 collection.

Learning

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Sample questions and answers

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If the safety valves fitted on an air reservoir can be isolated from the reservoir, then..

One correct answer

  • the reservoir must be fitted with a fusible plug.✓ Correct answer
  • the safety valve must be fitted with a fusible plug.
  • the compressor must be fitted with a fusible plug.
  • it can be used legally without any added safety measures.
What is the most common cause of the lowering in performance of heat exchangers?

One correct answer

  • Fouling of the heat transfer surface.✓ Correct answer
  • An air lock.
  • Low water flow.
  • The division plate joint failure.
During discharge, problems with the inert gas plant result in the production of clean inert gas being reduced by 50%. What do you do?

One correct answer

  • Advise the Chief Officer so that he can reduce the discharge rate in line with the reduction of the gas supply.✓ Correct answer
  • Adjust the boiler controls to increase the fuel and reduce the air in an attempt to reduce the oxygen content of the gas.
  • Allow the discharge to continue as the oxygen content in the tanks may not rise significantly during the remaining discharge period.
  • Shut down the discharge until the inert gas system problem is resolved.
In plate type coolers you would normally expect the plates to be made of..

One correct answer

  • titanium.✓ Correct answer
  • silver.
  • stainless steel.
  • nickel brass.
The cause of an abnormally high condenser pressure within a refrigeration system would be..

One correct answer

  • incondensable gases in the refrigerant.✓ Correct answer
  • a low cooling water flow through the condenser.
  • a defective thermal expansion valve.
  • an above normal level of refrigerant in the condenser.

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