How often does NFPA 20 require a diesel pump to be run?

How often does NFPA 20 require a diesel pump to be run?

• A. daily
• B. monthly
• C. weekly
• D. yearly

Answer: (C)

NFPA 20 requires the diesel engine–driven fire pump to be exercised on a weekly basis. This weekly run keeps the engine and pump in ready-to-use condition by cycling the fuel system, lubrication, cooling, and electrical systems, and by verifying that the pump will start and deliver water when needed. Running under service conditions (often with discharge piping loaded) helps prevent issues like wet stacking, fuel degradation, or seals sticking, ensuring the unit actually operates when a fire event occurs. Daily would create unnecessary wear, while monthly or yearly exercise could allow problems to develop and reduce reliability.

NFPA 20 requires the diesel engine–driven fire pump to be exercised on a weekly basis. This weekly run keeps the engine and pump in ready-to-use condition by cycling the fuel system, lubrication, cooling, and electrical systems, and by verifying that the pump will start and deliver water when needed. Running under service conditions (often with discharge piping loaded) helps prevent issues like wet stacking, fuel degradation, or seals sticking, ensuring the unit actually operates when a fire event occurs. Daily would create unnecessary wear, while monthly or yearly exercise could allow problems to develop and reduce reliability.