GASCO Exit Exam • Set 8 Question 11 of 30

How do you maintain the cargo tank pressure as low as possible (about 20 - 30 mbar gauge) during inerting operation after gas burning is stopped?

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Direct Answer

Option D: by continuous venting via dedicated mast riser

The correct answer is by continuous venting via dedicated mast riser. This complies with established gas tanker operational standards, thermodynamics, and the IGC Code safety requirements.

All Options

by continuous venting via vapor dome's safety valves (manually opened)

by continuous venting via vacuum pump mast riser

by continuous venting via ship's funnel exhaust

by continuous venting via dedicated mast riser (Correct Answer)

Detailed Explanation & Context

The correct answer is by continuous venting via dedicated mast riser. 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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