Why a two way valve is provided in the air or inert gas line provided to check the leakage of oil in the cofferdam?
Direct Answer
Option C: One is for the normally closed position, the other is for checking the leakage of cargo oil in the pump side and the third one is for checking the leakage of hydraulic oil in the motor side
The two-way valve controls purging. One position allows purging of the hydraulic motor side for seal integrity, and the other allows purging of the cargo pump side. This dual function, as detailed in pump manuals, ensures both sides are free from leaks or contamination.
All Options
Detailed Explanation & Context
The two-way valve controls purging. One position allows purging of the hydraulic motor side for seal integrity, and the other allows purging of the cargo pump side. This dual function, as detailed in pump manuals, ensures both sides are free from leaks or contamination.
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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