USCG Exam PracticeRefrigeration principles and systems
Under 46 CFR, what safety system is specifically required in a machinery compartment that contains ammonia refrigeration equipment?
- A. A CO2 fixed fire-extinguishing system with a remote release outside the compartment.
- ✓ A sprinkler system providing effective water spray with a remote-control device located outside the compartment.Correct
- C. An independent exhaust fan interlocked to start automatically on ammonia detection.
- D. A halon suppression system with a manual pull station at the compartment entrance.
Why B is correct
46 CFR §58.20-15(b) specifically requires that machinery compartments containing ammonia equipment be fitted with a sprinkler system providing effective water spray, with the remote-control device located outside the compartment. No other suppression type is specified by this regulation.
Cited:46 CFR §58.20-15