USCG Exam PracticeRefrigeration principles and systems
According to federal regulations, what safety device must be installed outside a machinery compartment that contains ammonia refrigeration equipment?
- A. A high-pressure cutout switch
- ✓ A remote-control device for the water spray sprinkler systemCorrect
- C. An electronic refrigerant leak detector
- D. A low-pressure cutout switch
Why B is correct
46 CFR §58.20-15(b) requires that machinery compartments containing ammonia equipment be fitted with a sprinkler system providing effective water spray, with a remote-control device located outside the compartment. High- and low-pressure cutouts are compressor protections, not the required outside-compartment device.
Cited:46 CFR §58.20-15