TASCO Exit Exam • Set 5 Question 29 of 30
Back flow of inert gas is prevented by:
✓
Direct Answer
Option B: The deck water seal
The deck water seal is a mandatory safety device in the inert gas system that acts as a non-return barrier, preventing hazardous cargo gases from flowing back into the inert gas plant and engine room.
All Options
A
valve provided in the scrubber
B
The deck water seal
(Correct Answer)
C
An isolating valve
D
The deck mechanical non-return valve
Detailed Explanation & Context
The deck water seal is a mandatory safety device in the inert gas system that acts as a non-return barrier, preventing hazardous cargo gases from flowing back into the inert gas plant and engine room.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Oil Tanker Cargo Operations (TASCO).
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