USCG Exam PracticeBoiler and steam propulsion fundamentals
Under 46 CFR §56.50-30, when a boiler is fitted with an economizer, where must the check valve in the economizer discharge be located?
- A. As close as possible to the economizer inlet, upstream of the economizer
- B. At the midpoint of the economizer discharge piping run
- ✓ As close as possible to the drum feed inlet nozzleCorrect
- D. Immediately downstream of the feed pump discharge flange
Why C is correct
46 CFR §56.50-30(b)(3) requires that boilers fitted with economizers have a check valve in the economizer discharge located as close as possible to the drum feed inlet nozzle. This placement protects the drum from backflow through the economizer. (46 CFR §56.50-30)
Cited:46 CFR §56.50-30