GASCO Exit Exam • Set 10 Question 11 of 30
What is done with Normal Boil - off (NBO) vapour?
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Direct Answer
Option A: It is removed to maintain the cargo temperature and pressure
The correct answer is It is removed to maintain the cargo temperature and pressure. This complies with established gas tanker operational standards, thermodynamics, and the IGC Code safety requirements.
All Options
A
It is removed to maintain the cargo temperature and pressure
(Correct Answer)
B
It is retained in the tanks as it has no effect
C
It is vented to atmospher
D
It is collected and stored in the buffer tank
Detailed Explanation & Context
The correct answer is It is removed to maintain the cargo temperature and pressure. This complies with established gas tanker operational standards, thermodynamics, and the IGC Code safety requirements.
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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