Which type of fire pump is operated weekly?

• A. Electric motor-driven
• B. Pneumatic driven
• C. Hydraulic driven
• D. Diesel engine-driven

Answer: (D)

Diesel engine-driven fire pumps are exercised weekly to ensure reliability and readiness. Diesel engines sit idle for long periods, which can lead to hard starts, weak batteries, stale fuel, and cooling or lubrication issues. By starting the engine and running the pump each week, you confirm that the engine will start under load, the fuel and lubrication systems are functioning, and the pump will deliver water at the required pressure when needed. This routine validates the whole start‑up sequence, controller operation, and alarms, reducing the chance of a failure during an emergency. Electric motor-driven pumps, while important, are typically exercised according to different schedules, and pneumatic or hydraulic drives are not common primary fire-pump drives, so the weekly practice is specifically associated with the diesel-engine unit.