Chapter 13 - Firewater Pump Acceptance and Flow Testing

Abstract

This chapter reviews a method of testing firewater pumps to verify adequate flow performance and acceptable mechanical operation during an emergency. Pressure gages should be provided on the suction and a method to measure the amount of flowing water produced by the pump. Firewater pumps can produce high water pressures and capacities that can inflict fatal injuries and extensive property damage if not properly controlled and managed. As pumps will deteriorate because of wear from operation, corrosion, or erosion, periodic performance tests should be performed to ensure the pump is capable of delivering the required amount of water and at an acceptable pressure. Fuel storage for diesel engines should be sampled at the time of annual flow performance testing. Engine driver for firewater pumps are normally provided with a tachometer, which is used to verify the specific speed of the pump during flow testing against the factory test curve for a specific speed. Test gages for pressure and flow measurement are usually required to be located on a section of pipe where the water flow is constant and straight. Fire pumps should be run weekly to verify startup capability and general condition. Confirmation of the fire pump controller operation capability should be periodically performed. Local and remote control points for firewater pump startup should be activated. Annunciation of remote alarms from the fire pump to plant utility monitoring systems should also be confirmed. Basic test procedure is also explained in this chapter.