Question 15 of 30
When dry chemical extinguishers are used to put out Class B fires, there is a danger of reflash because dry chemical:
A
Reacts aggressively with marine steel materials
B
Does little or no cooling
C
Displaces air structures for only a few seconds
D
Vaporizes into flammable gas compounds under heat exposure
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Answer & Explanation
The correct answer is Option B: Does little or no cooling.
Dry chemical agents are effective at suppressing Class B fires by interrupting the chemical reaction, but they offer minimal cooling. This lack of cooling capability means that the fuel can still vaporize and re-ignite if the heat source persists.