How do you test fire pump for 100 gpm?

To test a fire pump for 100 gallons per minute (GPM), first ensure the pump is connected to a suitable water supply and all valves are open. Use a flow meter or a calibrated flow testing device to measure the water output at the discharge point while the pump is operating. Start the pump and monitor the flow rate until it stabilizes at 100 GPM, ensuring that pressure gauges are also checked to confirm the pump is functioning within its designed parameters. Document the results for compliance and maintenance records.