Which test, specified by NFPA 1901, ensures the piping between the water tank and pump is capable of delivering the minimum required water?

• A. Tank to pump flow test
• B. Pump discharge test
• C. Water tank integrity test
• D. Piping velocity test

Answer: (A)

NFPA 1901 requires a tank-to-pump flow test to verify that the piping between the water tank and the pump can deliver the minimum required water. This test specifically checks the suction path from the tank to the pump—through the tank’s fittings, suction line, and any valves or strainers—to ensure there’s no undue restriction that would prevent the pump from drawing and delivering the minimum water flow. It confirms the transfer path is capable of supplying the pump at its rated intake, which is essential for reliable operation. The other tests focus on different parts of the system: a pump discharge test looks at water leaving the pump through discharge outlets, a water tank integrity test assesses the tank’s condition, and a piping velocity test isn’t a standard NFPA test for this purpose.