USCG USCG Safety Eng
Set 4 • Question #99 of 254
Launch Interactive Practice Room There are two disadvantages to CO2 when used as a total flooding firefighting agent. One of these is the limited quantity available and the other is __________.
A
the lack of cooling effect on heated materials
✓ Correct Answer
B
it cannot be used in a dead ship situation without electrical power available to the CO2 pump
C
it breaks down under extreme heat to form poisonous gases
D
there is no effect on a class "A" fire even in an enclosed space
USCG NMC Regulatory Explanation
Fixed CO2 total flooding systems require audible and visual pre-discharge alarms, automatic ventilation fan and fuel pump shutdowns, and pneumatic time delays to ensure crew evacuation before asphyxiating CO2 gas floods the machinery space.
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