USCG Exam PracticeBoiler and steam propulsion fundamentals
In a unit feed system under 46 CFR §56.50-30, what automatic control governs the discharge from each feed pump and the feed supply to each boiler?
- A. The boiler steam pressure at the steam stop valve
- ✓ The water level in that individual boilerCorrect
- C. The feedwater temperature at the deaerating feed tank outlet
- D. The group header pressure common to all boilers
Why B is correct
46 CFR §56.50-30(e)(2) states that in the unit feed system, the discharge from each pump and the feed supply to each boiler must be automatically controlled by the level of water in that boiler. Manual control must also be provided in addition to the automatic control.
Cited:46 CFR §56.50-30