No-flow condition pump operation for electric motor driven fire pumps shall be conducted how often?

No-flow condition pump operation for electric motor driven fire pumps shall be conducted how often?

• A. Weekly
• B. Daily
• C. Monthly
• D. Quarterly

Answer: (C)

No-flow condition tests check that an electric motor driven fire pump can start and run when there is no water flowing, simulating a scenario where discharge valves are closed. This exercise verifies the starting sequence, the motor and controller operation, and the pump’s ability to reach operating speed and develop pressure even with no load on the system. For electric motor driven pumps, this no-flow test is performed monthly, providing regular checks of electrical and mechanical readiness without the wear of a full-flow test.

No-flow condition tests check that an electric motor driven fire pump can start and run when there is no water flowing, simulating a scenario where discharge valves are closed. This exercise verifies the starting sequence, the motor and controller operation, and the pump’s ability to reach operating speed and develop pressure even with no load on the system. For electric motor driven pumps, this no-flow test is performed monthly, providing regular checks of electrical and mechanical readiness without the wear of a full-flow test.