USCG Exam PracticeFire extinguishers — types, ratings, requirements
Under 33 CFR §175.310, which of the following conditions indicates that a portable fire extinguisher is NOT in good and serviceable working condition?
- A. The lock pin is firmly in place.
- B. The pressure gauge reads within the operable range.
- ✓ The discharge nozzle shows visible obstruction.Correct
- D. The extinguisher has not been previously used.
Why C is correct
33 CFR §175.310(a)(4)(iii) requires that the discharge nozzle be clean and free of obstruction. A blocked nozzle renders the extinguisher not in good and serviceable condition. The other options describe conditions that confirm serviceability.
Cited:33 CFR §175.310