USCG Exam PracticeRefrigeration principles and systems
Under 46 CFR §58.20-15, anhydrous ammonia refrigerating machines installed aboard a vessel must be located in which type of space?
- A. The main engine room, provided a fixed gas detection system is installed
- ✓ A well-ventilated, isolated compartment, preferably on deckCorrect
- C. Any machinery space fitted with a CO2 fixed fire-extinguishing system
- D. A watertight compartment below the waterline to limit refrigerant spread
Why B is correct
46 CFR §58.20-15(a) requires anhydrous ammonia refrigerating machines to be located in a well-ventilated, isolated compartment, preferably on deck. Installation in the engine room is prohibited unless the arrangement eliminates any hazard from escaping gas.
Cited:46 CFR §58.20-15