USCG Exam PracticeBoiler and steam propulsion fundamentals
According to 46 CFR §56.50-30(b)(1), where must stop and stop-check valves in the main feed line be located?
- A. At the feed pump discharge flange
- B. At the midpoint of the feed line between the pump and the boiler
- ✓ As closely as possible to drum inlets or to the economizer inletCorrect
- D. Downstream of the feed water regulator in all cases
Why C is correct
46 CFR §56.50-30(b)(1) requires that stop and stop-check valves be fitted in the main feed line and be attached as closely as possible to drum inlets or to the economizer inlet. This placement limits the volume of water that can drain back toward the pump in the event of a valve or line failure.
Cited:46 CFR §56.50-30