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 SECTION 5.
FIRE PUMPS
5.1
DIESEL ENGINE DRIVEN FIRE PUMPS:
5.1.1 Diesel Fire Pumps: All pumps shall be diesel driven pumps
unless reliable electrical power is available as stipulated in paragraph
5.6.4 of MIL-HDBK-1008B. In the PACDIV area of geographical cognizance no
commercially available electric power is considered reliable. If an
electric fire pump with a diesel engine driven emergency generator is to be
provided, then the designer shall perform an economic life cycle analysis
indicating the proposed installation is more economical than a straight
diesel engine driven fire pump.
5.1.2 Fire Pump Rotation:
Pump rotation for diesel engine driven
fire pump shall be clockwise.
5.2
FIRE PUMP DESIGN:
5.2.1 Pump Installation: All pump installations shall include a flow
meter in addition to a test header. The flow meter shall not discharge
into the suction feed main supplying the fire pump. An approved butterfly
valve shall be installed downstream of the flow meter. If the pump takes
suction from a water storage tank, then the flow meter discharge shall be
piped directly back to the water storage tank as far away as possible from
the tank's suction vortex plate.
5.2.2 Separate Bypass: All fire pumps taking suction from street
mains shall be equipped with a separate bypass.
5.2.3 Isometric Piping Details: All contract drawings shall contain
an isometric piping details of each fire pump installation.
5.2.4 Remote Alarms: All pump installations shall have remote alarms
in a constantly occupied location. If a base wide radio fire alarm system
exists, the remote alarms and common trouble signals shall be connected to
the radio fire alarm transmitter or transceiver.
5.2.5 Relief and Flow Test Piping: Fire pumps supplied from a
suction tank shall have pressure relief and flow test discharge outlets
piped back to the top of the suction tank away from the suction vortex
plate.
5.3
FIRE PUMP CONTROLLERS:
5.3.1 Primary Resistors: Primary resistors on electric fire pump
controllers shall be enclosed in a cabinet separate from the rest of the
controller components. All electric fire pump controllers shall be primary
resistor type reduced voltage starting controllers.
5.3.2 Pressure Sensing Lines: Each pump controller shall have
individual pressure sensing lines taken from the system side of the pump.
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