During the performance test, the pump should operate for how many minutes at 100% of the rated capacity at 150 psi net pump pressure?

The requirement for the pump to operate for a specific duration at 100% of its rated capacity at 150 psi net pump pressure is established to ensure that the equipment can handle its maximum rated performance under specified conditions. Operating a pump for 20 minutes at this pressure allows for a thorough evaluation of the pump's efficiency, effective cooling, and a demonstration of its ability to maintain performance over an extended period of time.

In pump testing, this duration helps to identify if there are any issues such as overheating, pressure drops, or performance inconsistencies that could affect operational reliability in actual fireground scenarios. Testing for this length of time ensures that the pump can sustain its rated capacity without failure, proving it can deliver the necessary water flow under standard operating conditions when deployed in real-life emergencies.

The other durations provided do not meet the standard requirements for this performance test, as they either do not allow enough time to adequately assess pump performance or exceed typical testing standards for evaluation.