USCG Exam PracticeBoiler and steam propulsion fundamentals
In a unit feed system governed by 46 CFR §56.50-30, how many boilers may be served by any one auxiliary feed pump on a vessel fitted with three or more boilers?
- A. One boiler only
- ✓ No more than two boilersCorrect
- C. No more than three boilers
- D. All boilers on the vessel, provided the pump has sufficient capacity
Why B is correct
46 CFR §56.50-30(e)(1) specifies that in a unit feed system on vessels with three or more boilers, not more than two boilers may be served by any one auxiliary pump. The auxiliary pump may be interconnected so that any pump can feed any boiler, but the two-boiler-per-auxiliary-pump limit still applies. (46 CFR §56.50-30)
Cited:46 CFR §56.50-30