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Exam CFPS Topic 1 Question 26 Discussion

Actual exam question for NFPA's CFPS exam
Question #: 26
Topic #: 1
Wet chemical extinguishing agents when sprayed on a grease fire, extinguish the fire by

Suggested Answer: A Vote an answer

Explanation
Wet chemical extinguishing agents, such as potassium acetate and potassium citrate, when sprayed on a grease fire, extinguish the fire by smothering and cooling. The wet chemical agent reacts with the hot grease and forms a layer of soap-like foam on the surface of the fat, which acts as an insulation between the hot grease and the atmosphere, preventing the escape of combustible vapors and oxygen supply.The wet chemical agent also absorbs heat from the grease and lowers its temperature below the ignition point12 References:
What is the Difference Between a Wet and Dry Chemical Fire ...
Wet Chemical (Class K) Fire Extinguisher - Portable - WFX

by Virginia at Oct 17, 2024, 12:04 PM

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