Question 136 of 201 tasco Exam
Back flow of inert gas is prevented by:
A An isolating valve
B The deck water seal
Correct
C A valve provided in the scrubber
D The deck mechanical non-return valve
Answer & Explanation
The correct answer is 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.