USCG Exam PracticeFire extinguishers — types, ratings, requirements
Under 33 CFR §175.310, which of the following conditions renders a portable fire extinguisher NOT in good and serviceable working condition?
- A. The extinguisher was manufactured before January 1, 1965.
- B. The pressure gauge needle is in the operable (green) range.
- ✓ The discharge nozzle shows visible obstruction.Correct
- D. The extinguisher is mounted in a bracket inside a cabin.
Why C is correct
33 CFR §175.310(a)(4)(iii) specifically requires that the discharge nozzle be clean and free of obstruction as a condition of good and serviceable working condition. A blocked nozzle directly fails this criterion. The other options do not constitute a deficiency under the listed maintenance criteria.
Cited:33 CFR §175.310