USCG Exam PracticePumps, valves, and piping systems
According to 46 CFR §56.07-10, relief valves are required at pump discharges for which type of pump installation?
- A. All centrifugal pump installations without exception
- B. All pump types, with no exceptions permitted
- ✓ All pump types except centrifugal pumps so designed that system maximum allowable working pressure cannot be exceededCorrect
- D. Reciprocating pumps only, regardless of system design pressure
Why C is correct
46 CFR §56.07-10(b)(1) requires relief valves at pump discharges except for centrifugal pumps so designed and applied that a pressure in excess of the maximum allowable working pressure for the system cannot be developed. The exception is conditional on design, not a blanket exemption for all centrifugal pumps.
Cited:46 CFR §56.07-10