Fire Pump Room Size Requirements

It is assumed that the reader has a basic understanding of the use of fire pumps fire pump installation requirements and the role of nfpa in establishing these requirements.

Fire pump room size requirements.

Fire p ump p ressures. Overall nfpa 20 received 264 proposals for revision 135 official follow up comments and 2 successful floor actions at nfpa s 2012 technical reporting session in las. Branch circuit conductors to a single fire pump motor must have a rating of not less than 125 of the motor flc as listed in tables 430 248 or 430 250. When it comes to fire pumps there s more to designing and installing these units than meets the eye.

For fire pumps such as horizontal split case and vertical in line centrifugal pumps that are required to operate under net positive suction head the total head of a fire pump is calculated by adding the suction head city pressure to the. A 1 1 for more information see nfpa 25 standard for the inspection testing and maintenance of water based fire protection systems and nfpa 70 national electrical code article 695. 1 1 1 this standard deals with the selection and installation of pumps supplying liquid for private fire protection. Conductors supplying only a fire pump motor must have a minimum ampacity of at least 125 of the motor full load current rating as required by 430 22 695 6 b 2 as shown in fig.

901 4 6 pump and riser room size. 1 1 2 the scope of this document shall include liquid supplies. In summary a fire pump is a critical life safety equipment item in a building. Where provided fire pump rooms and automatic sprinkler system riser rooms shall be designed with adequate space for all equipment necessary for the installation as defined by the manufacturer with sufficient working space around the stationary equipment.

Nfpa 20 standard for the installation of stationary pumps for fire protection requires that the fire pump driver controller water supply and power supply shall be protected against possible interruption of service through damage caused by explosion fire flood earthquake rodents insects windstorm freezing vandalism and other adverse conditions. This bypass is to be as least as large as the required fire pump discharge pipe. The total head of a fire pump is the energy imparted to the liquid as it passes through the pump usually expressed in psi.