LGTCO/LGTF Exit Exam • Set 4 Question 9 of 30
What operation is done on fully refrigerated gas carriers before loading liquid cargo?
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Direct Answer
Option B: Cooling down
Before loading cryogenic liquid cargo, cargo tanks must be cooled down gradually with liquid cargo spray to minimize thermal stress and prevent excessive boil-off pressure spikes.
All Options
A
Gassing up
B
Cooling down
(Correct Answer)
C
Inerting
D
Aerating
Detailed Explanation & Context
Before loading cryogenic liquid cargo, cargo tanks must be cooled down gradually with liquid cargo spray to minimize thermal stress and prevent excessive boil-off pressure spikes.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).
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