7.10 Water Supply
The fire pump shall be electric motor driven, horizontal
split case centrifugal type, unless this is not feasible.
for Fire Protection
Fire Pump Installation. The fire pump shall be installed
in accordance with the requirements in NFPA 20.
Adequacy of Water Supply. The designer shall assess
Fire Pump Operations. A fire pump shall start
adequacy of the existing water supply. The designer shall
automatically at 69 kPa (10 psi) below pressure
perform water supply flow testing of fire hydrants and/
maintenance pump (jockey pump) start pressure.
or fire pumps. If data less than one year old is available
from the local jurisdiction, the designer shall verify the
Fire Pump Controller. The power transfer switch and
locations involved as well as the quality and accuracy of
the fire pump controller shall be factory assembled and
packaged as a single unit. Separate transfer switches
are not permitted. The fire pump controller shall be
Capacity and Duration. The required fire flows and
monitored by the fire alarm system.
pressures for buildings shall comply with the
requirements in NFPA 13 and the IBC.
Pressure Maintenance Pump (Jockey Pump). A pressure
maintenance pump shall be utilized where it is desirable
Fire Pump Design. When a fire pump is necessary to
to maintain a uniform or relatively high pressure on the
supplement fire flow and pressure, size it to comply with
fire protection system. A jockey pump shall be sized to
the requirements in NFPA 13, 14, and 20. For emergency
make up the allowable leakage rate within 10 minutes or
power requirements see PBS-P100, Chapter 6.
3.8 lpm (1 gpm), whichever is larger.
Special Requirements. The following requirements
take precedence over the requirements in NFPA 13, 14,
The fire pump shall be sized only for the sprinkler system
requirements only if the local responding fire department
can provide the necessary flow and pressure for manual
fire fighting operations (i.e., hose stations), through fire
department siamese connections.
Water Supply for Fire Protection
Revised March 2005 PBS-P100