During which test is water flow measured and adjacent hydrant pressures recorded?

The flow test is specifically designed to measure the water flow rate from a hydrant while simultaneously recording the pressures of adjacent hydrants. This test provides crucial information about the actual water supply available for fire protection purposes. By measuring flow, fire protection engineers can determine if the water supply is sufficient for firefighting activities and ensure that the systems installed can handle the intended demand.

During a flow test, operators open a hydrant and allow water to flow freely while monitoring the flow rate (typically measured in gallons per minute) and pressures at both the tested hydrant and nearby hydrants. This data helps in assessing the condition and capability of the water supply system.

The flushing test is primarily aimed at clearing obstructions or sediment in the water supply system and does not focus on flow measurement. The hydrostatic test is intended to check for leaks and assess the integrity of pipes under pressure, rather than measuring flow and pressure simultaneously. The pumper outlet test evaluates the performance of a fire pump, but does not typically involve the measurement of flow at hydrants in relation to adjacent hydrants. Thus, the flow test stands out as the appropriate choice for the described scenario.