Historical
NFPA 291-2019
NFPA 291 Recommended Practice for Fire Flow Testing and Marking of Hydrants, 2019 edition
The scope of this document is fire flow testing and marking of hydrants. Fire flow tests are conducted on water distribution systems to determine the rate of flow available at various locations for fire-fighting purposes. A certain residual pressure in the mains is specified at which the rate of flow should be available. Additional benefit is derived from fire flow tests by the indication of possible deficiencies, such as tuberculation of piping or closed valves or both, which could be corrected to ensure adequate fire flows as needed.
Content Provider
National Fire Protection Association [nfpa]
