OCTCO/OCTF Exit Exam • Set 2 Question 10 of 30
Why must cargo manifolds be fitted with blank flanges bolted with full set of bolts when not in use?
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Direct Answer
Option A: Provide positive secondary liquid/vapor containment against valve leakage
Blank flanges secured with a full set of bolts provide positive secondary mechanical containment at cargo manifolds, eliminating potential leakage risks when transfer hoses are disconnected.
All Options
A
Provide positive secondary liquid/vapor containment against valve leakage
(Correct Answer)
B
Keep manifold painted
C
Weight balance
D
Improve appearance
Detailed Explanation & Context
Blank flanges secured with a full set of bolts provide positive secondary mechanical containment at cargo manifolds, eliminating potential leakage risks when transfer hoses are disconnected.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).
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