UL/FM Fire Pump Systems
Lunch & Learn
04/18/05
Rules & Regulations
NFPA
National Fire Protection Association
(North America)
CEA
Comité Européen Des Assurances
(European)
Fire Protection Pumps
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End Suction Pumps
Vertical In-line
Horizontal Split Case
Vertical Mounted Split Case
Vertical Turbine
Compliance to NFPA 20
• 100% Flow at 100%
Head
• Maximum of 140%
of Head at Shutoff
• Minimum of 65% of
Head at 150% of
Flow
Maximum Allowed Pressure
• The pump shutoff pressure plus the maximum
static suction pressure shall not exceed the
pressure for which the system components are
rated for.
• Pressure relief valves shall not be used as a
means to meet this requirement.
• Variable speed pressure limiting control drivers
are acceptable in meeting this requirement (new
in NFPA 2003).
Fire Pump Drivers
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Electric Motors
Diesel Engines
Steam Turbines
Combination of the above
Fire Pump Accessories
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Suction pressure/vacuum gauge.
Discharge pressure gauge.
Automatic air release valve
Casing relief valve (electric driven)
Main pressure relief valve (diesel driven
and VFD applications)
Suction Pipe & Fittings
• Suction can be either from a city water supply or
a fire water storage tank.
• Suction shall be sized so that at 150% of rated
capacity the velocity in the suction pipe located
10 pipe diameters upstream of the pump suction
flange shall not exceed 15 ft/sec.
• Concentric reducers are not allowed in the
suction piping.
• UL/FM OS&Y gate valve only.
Discharge Pipe & Fittings
Relief Valves
• Used on Diesel Engines
• Used with Variable speed pressure limiting
control devices
• Spring direct acting or pilot operated.
• Relief discharges to an open or closed
waste cone.
• Discharges to suction source or splash
block
Test Meters
• Where water usage or discharge is not permitted
for the duration of the test.
• Installed with upstream and downstream pipe
runs per meter manufacturer.
• Where meter downstream run goes back to
suction side of pump proper pipe runs must be
followed per NFPA-20.
• A throttling valve shall be installed downstream
of the flow meter.
Hose Valve Test Header
• Hose test valves are rated for 250 GPM.
• Hose valves shall be mounted on a test
head.
• A UL/FM isolation valve shall be installed
upstream of the test head.
• A Ball drip valve shall be installed if the
test head is mounted outside the building
to prevent freezing.
Specialty Valves & Accessories
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Backflow Preventers
Suction Control Valves
Pressure Regulating Valves
Alarm Check Valves
Siemese Valves
Tamper Switches
Flow Switches
Pressure Sensing Lines
Electric Drive Pumps
• Power derived by a reliable power source
or two or more approved independent
sources.
• Second power source shall be from a
second utility or on-site power generation
• Automatic Transfer switch to be used if
two or more power sources are used.
Electric Drive Starting Methods
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Across The Line
Part Winding
Wye Delta (open)
Wye Delta (closed)
Primary Resistance
Auto Transformer
Solid State
Electric Driven Power Supply Arrangement
Diesel Engine Driven Accessories
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Cooling System
Fuel system
Raw Water outlet Drain
Battery Racks
Exhaust System
Air Intake Louver for Engine Air Intake
(used with buildings)
Fuel System design
Pressure Maintenance Pumps
• Rated for not less than normal leak load.
(normally 1% of rated fire flow and 10 psig
above rated boost pressure.
• Discharge pressure shall be sufficient to
maintain desired system pressure.
• Where the shutoff pressure is greater than the
pressure ratings of the system components a
relief valve shall be installed on the pump
discharge.
House Utilities (per NFPA-20)
• Approved or listed source of heat
• Artificial Lighting
• Emergency lighting (including fixed and
portable).
• Ventilation
• Drainage
• Convenience outlet