Safety, Fire & Survival · Firefighting
A fixed CO2 flooding system extinguishes a fire in an engine room primarily by:
- ADisplacing oxygen and smothering the fire✓ Correct
- BCooling the space with cold gas
- CCoating surfaces with foam
- DAbsorbing the smoke
Explanation
CO2 works mainly by displacing oxygen and smothering the fire. Because it makes the space immediately lethal to anyone inside, the crew must be evacuated and accounted for, and the space sealed, before the system is released.
Authority: 46 CFR Subchapter F; SOLAS II-2
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