GASCO Exit Exam • Set 14 Question 5 of 30

What is the purpose of having a cofferdam heating system?

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Direct Answer

Option B: To ensure that the cofferdam and liquid domes spaces are at all time kept at +5C when at loaded voyag

The correct answer is To ensure that the cofferdam and liquid domes spaces are at all time kept at +5C when at loaded voyag. This complies with established gas tanker operational standards, thermodynamics, and the IGC Code safety requirements.

All Options

To generate sufficient boil- off to sustain dual fuel firing for the boiler in engine room.

To ensure that the cofferdam and liquid domes spaces are at all time kept at +5C when at loaded voyag (Correct Answer)

To increase cargo temperature before arrival at discharge terminal

To ensure efficiency of vaporizer operation during the cooling down operation

Detailed Explanation & Context

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Liquefied Gas Tanker Cargo Operations (GASCO).

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More Questions in GASCO Set 14

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Q1 Which cargo tank level measuring system is commonly used as a primary system? Q2 Liquefied gas carriers are normally loaded or unloaded through__________situated amidships. Q3 What test is carried out to ensure that all stripping / spray pumps are operational? Hint: this test is is often done after leaving the loading port as it is allows time for installation of an auxiliary cargo pump should it be necessary. Q4 What is the approximate temperature desired on board on LNG tanker, for the output from the forcing vaporizer? Q5 What is the purpose of having a cofferdam heating system? Q6 Which of the following options is an exception in a typical LNG boil off gas reliquefication plant? Q7 After extinguishing a paint locker fire using the fixed CO2 system, the next immediate action is for the space to be Q8 Smoke detectors, the correct answer is, Q9 which of the following conditions can contribute to accidents ? Q10 If the concentration of the fuel is less than 5% LNG vapors cannot burn because of inadequate___________