CHEMCO Exit Exam • Set 8 Question 26 of 30
The purpose of the deck seal in an inert gas system is to prevent
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Direct Answer
Option A: flammable vapors from entering machinery space
The deck water seal acts as a crucial barrier, preventing flammable cargo vapors from migrating back up the inert gas line and entering the machinery space, a critical safety feature detailed in ISGOTT.
All Options
A
flammable vapors from entering machinery space
(Correct Answer)
B
flue gas escaping to atmosphere
C
inert gas escaping to atmosphere
D
air entering inert gas system
Detailed Explanation & Context
The deck water seal acts as a crucial barrier, preventing flammable cargo vapors from migrating back up the inert gas line and entering the machinery space, a critical safety feature detailed in ISGOTT.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
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