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CHEMCO Exit Exam • Set 12 Question 29 of 30

The purpose of a cofferdam between two compartments is to

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Direct Answer

Option D: prevent different liquids from the two tanks coming in contact in case of a leak

Cofferdams are empty spaces separating adjacent compartments, as per SOLAS and classification society rules. Their primary purpose is to prevent the mixing of incompatible liquids or to isolate hazardous areas. This design ensures that in the event of a leak, contamination or dangerous reactions between substances are avoided.

All Options

A
store tools and equipment that are necessary for the adjacent compartments
B
give access to the bulkhead for inspection and repairs when the tanks are full with liquid
C
keep a reserve space if capacity of either compartment needs to be increased
D
prevent different liquids from the two tanks coming in contact in case of a leak (Correct Answer)

Detailed Explanation & Context

Cofferdams are empty spaces separating adjacent compartments, as per SOLAS and classification society rules. Their primary purpose is to prevent the mixing of incompatible liquids or to isolate hazardous areas. This design ensures that in the event of a leak, contamination or dangerous reactions between substances are avoided.

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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