GASCO Exit Exam • Set 6 Question 3 of 30
What is provided to ensure that the low duty gas compressor flow rate does not fall below the designed minimum?
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Direct Answer
Option B: An automatic surge control system
A nitrogen seal gas system is fitted on LNG boil-off gas compressors to prevent lubricating oil mist from contaminating the compressed vapor and prevent gas leakage along shaft seals.
All Options
A
An automatic shut down system
B
An automatic surge control system
(Correct Answer)
C
An automatic venting system
D
An automatic start system
Detailed Explanation & Context
A nitrogen seal gas system is fitted on LNG boil-off gas compressors to prevent lubricating oil mist from contaminating the compressed vapor and prevent gas leakage along shaft seals.
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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