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GASCO Exit Exam • Set 2 Question 4 of 30

What type of fire extinguishing agent is most effective on gas cargo manifold fires?

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Direct Answer

Option D: Dry Chemical Powder (DCP)

Dry Chemical Powder (DCP) is the only effective agent for gas manifold fires because it interrupts the chemical chain reaction of the flame. Unlike water, which may cause thermal shock or spread the fire, DCP provides rapid suppression, a requirement emphasized in SIGTTO and IGC Code safety protocols.

All Options

A
Seawater jet directly
B
Sand buckets
C
Foam blanket
D
Dry Chemical Powder (DCP) (Correct Answer)

Detailed Explanation & Context

Dry Chemical Powder (DCP) is the only effective agent for gas manifold fires because it interrupts the chemical chain reaction of the flame. Unlike water, which may cause thermal shock or spread the fire, DCP provides rapid suppression, a requirement emphasized in SIGTTO and IGC Code safety protocols.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Liquefied Gas Tanker Cargo Operations (GASCO).

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