GASCO Exit Exam • Set 15 Question 12 of 30
On a membrane class LNg tanker upon completion of cargo how is it remaining liquid in the discharging arm drained?
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Direct Answer
Option B: by opening one of thr aft cargo tanks loading valve with ship trimmed by stern
In Gaztransport & Technigaz NO 96 membrane containment systems, Invar membranes and perlite insulation boxes maintain cargo containment and thermal insulation.
All Options
A
By injecting nitrogen from shore to ship trimmed by stern
B
by opening one of thr aft cargo tanks loading valve with ship trimmed by stern
(Correct Answer)
C
by opening drain valve at the manifold connection with ship trimmed by head
D
by opening all discharge valves and drain back into the cargo tanks with ship kept even keel
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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