ASTTBC RFPT — Portable Fire Extinguishers (EX) · Question
When evaluating a dry chemical extinguisher for a 'High Hazard' Class B area, what is the minimum rating required if the hazard consists of flammable liquids of appreciable depth (over 1/4 inch)?
NFPA 10, Table 6.3.1.1 specifies that for High Hazard Class B fires involving liquids of appreciable depth, the minimum extinguisher rating must be 80-B.
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Question: When evaluating a dry chemical extinguisher for a 'High Hazard' Class B area, what is the minimum rating required if the hazard consists of flammable liquids of appreciable depth (over 1/4 inch)?
Answer options:
- 10-B
- 20-B
- 40-B ✅ 80-B
Correct answer: 80-B
Explanation: NFPA 10, Table 6.3.1.1 specifies that for High Hazard Class B fires involving liquids of appreciable depth, the minimum extinguisher rating must be 80-B.
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