When the cofferdam to be purged to check the leakage and remove the leaked oil?
Direct Answer
Option B: Before starting the cargo operation and after the cargo operation is completed
Cofferdams must be purged and tested for leakage both before commencing cargo operations to ensure integrity and after completion to verify that no cargo has leaked into them during the transfer, as per safe operational procedures.
All Options
Detailed Explanation & Context
Cofferdams must be purged and tested for leakage both before commencing cargo operations to ensure integrity and after completion to verify that no cargo has leaked into them during the transfer, as per safe operational procedures.
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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