GASCO Exit Exam • Set 4 Question 1 of 30

Which of the following is the typical seal gas system used for low duty gas compressor ?

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Direct Answer

Option C: Nitrogen

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

R 404

Carbon dioxid

Nitrogen (Correct Answer)

Argon

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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