ASTTBC RFPT — Portable Fire Extinguishers (EX) · Question
Which of the following extinguishers is exempted from the 6-year internal maintenance requirement but must still undergo hydrostatic testing every 12 years?
Per NFPA 10, Table 7.3.3.1, Halon 1211 extinguishers are exempted from the 6-year internal examination because they are closed-recovery systems; however, the cy
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Question: Which of the following extinguishers is exempted from the 6-year internal maintenance requirement but must still undergo hydrostatic testing every 12 years?
Answer options:
- Stored-pressure water-type extinguishers
- Stored-pressure dry chemical extinguishers
- Non-rechargeable (disposable) dry chemical extinguishers ✅ Halon 1211 extinguishers
Correct answer: Halon 1211 extinguishers
Explanation: Per NFPA 10, Table 7.3.3.1, Halon 1211 extinguishers are exempted from the 6-year internal examination because they are closed-recovery systems; however, the cylinders themselves still require a 12-year hydrostatic test.
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