CHEMCO Exit Exam • Set 8 Question 30 of 30
What is the major function of the deck water seal in an inert gas system?
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Direct Answer
Option B: Isolates hazardous areas from nonhazardous areas.
The deck water seal's primary function, as per ISGOTT, is to provide a liquid seal that isolates the inert gas main from the atmosphere and prevents the backflow of flammable cargo vapors into the inert gas system.
All Options
A
Relieves excessive pressures from the system.
B
Isolates hazardous areas from nonhazardous areas.
(Correct Answer)
C
Prevents the flow of inert gas into closed or isolated tanks.
D
Removes any leftover water or soot after the gas has been scrubbed.
Detailed Explanation & Context
The deck water seal's primary function, as per ISGOTT, is to provide a liquid seal that isolates the inert gas main from the atmosphere and prevents the backflow of flammable cargo vapors into the inert gas system.
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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