NFPA 20
NFPA 20 standard deals with the selection and installation of pumps supplying liquid for private fire protection.
The scope of NFPA 20 document include liquid supplies; suction, discharge, and auxiliary equipment; power supplies, including power supply arrangements; electric drive and control; diesel engine drive and control; steam turbine drive and control; and acceptance tests and operation.The purpose of this standard is to provide a reasonable degree of protection for life and property from fire through installation requirements for stationary pumps for fire protection based upon sound engineering principles, test data, and field experience.
Design Features:All interior bolt or screw that are exposed to pumped liquid shall be of rolled bronze or corrosion resistant material.The pump shall be provided with automatic air-release valve, circulation relief valve and pressure gauges.Bearings shall have an L-10 rating of not less than 5000 hours at maximum load.The pumps shall be provided with at least four packing rings plus a lantern ring. The lantern ring may be permitted to replace one ring of packing.Impellers, wear rings, shafts, lantern rings, glands shall be made of corrosion resistant material.Following material specifications are applied to STANDART NFPA fire pumps:Applications:
