ULFM Fire Pump Systems Lunch

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UL/FM Fire Pump Systems Lunch Learn04/18/05
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Rules Regulations
NFPA
CEA
Comité Européen Des Assurances (European)
National Fire Protection Association (North
America)
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Fire Protection Pumps

• End Suction Pumps
• Vertical In-line
• Horizontal Split Case
• Vertical Mounted Split Case
• Vertical Turbine

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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

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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).

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Fire Pump Drivers

• Electric Motors
• Diesel Engines
• Steam Turbines
• Combination of the above

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Fire Pump Accessories

• 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)

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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 OSY gate valve only.

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Discharge Pipe Fittings
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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

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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.

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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.

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Specialty Valves Accessories

• Backflow Preventers
• Suction Control Valves
• Pressure Regulating Valves
• Alarm Check Valves
• Siemese Valves
• Tamper Switches
• Flow Switches

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Pressure Sensing Lines
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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.

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Electric Drive Starting Methods

• Across The Line
• Part Winding
• Wye Delta (open)
• Wye Delta (closed)
• Primary Resistance
• Auto Transformer
• Solid State

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Electric Driven Power Supply Arrangement
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Diesel Engine Driven Accessories

• Cooling System
• Fuel system
• Raw Water outlet Drain
• Battery Racks
• Exhaust System
• Air Intake Louver for Engine Air Intake (used
  with buildings)

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Fuel System design
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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.

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House Utilities (per NFPA-20)

• Approved or listed source of heat
• Artificial Lighting
• Emergency lighting (including fixed and
  portable).
• Ventilation
• Drainage
• Convenience outlet