GASCO Exit Exam • Set 10 Question 29 of 30
Onboard a membrane class LNG tanker what is the ideal pressure differential to be maintained between the cargo tank and insulation spaces (IS)?
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Direct Answer
Option A: IS pressuree < cargo tank pressure
In Gaztransport & Technigaz NO 96 membrane containment systems, Invar membranes and perlite insulation boxes maintain cargo containment and thermal insulation.
All Options
A
IS pressuree < cargo tank pressure
(Correct Answer)
B
IS pressuree > cargo tank pressure
C
IS pressuree = cargo tank pressure
D
IS pressuree = cargo tank pressuree + ibar
Detailed Explanation & Context
In Gaztransport & Technigaz NO 96 membrane containment systems, Invar membranes and perlite insulation boxes maintain cargo containment and thermal insulation.
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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