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FIRE PROTECTION SYSTEM AX 272 F
c.) PRE-ACTION SYSTEM
(For Electrical Substation)
b.) STANDPIPE SYSTEM
a.) SPINKLER SYSTEM 4 ZONE
SPRINKLER SYSTEM 4 ZONES
ALARM VALVE STATION
STANDPIPE SYSTEM
CLASS III SYSTEM IS PROVIDED
Class III Systems Provided 1 ½”
hose stations to supply water for use
by trained building occupants and
2½” hose connections to supply a
larger volume of water for use by
Fire Department.
FIRE HOSE STATION ADVANTAGES
• Quick Suppression
• One Person Operation
• Minimal Water Damage
• Occupant Safety and Rescue
TYPICAL CLASS III FIRE HOSE STATION
OPERATION OF FIRE HOSE STATIONS
1. Open valve completely
2. Pull hose entirely off rack
3. Open nozzle
THREE STEPS FOR OPERATION
1. Open valve completely.
2. Pull hose entirely off rack(or else water will not flow)
3. Open nozzle. Water will flow when hose is entirely off rack & nozzle is open.
PREACTION SYSTEMFOR
ELECTRICAL SUBSTATION
• Preaction System Control Panel
• Smoke detectors
• Manual Pull Station (Electric)
• Alarm Bell
• Sounder cum flasher
PREACTION SYSTEMCOMPONENTS
• Deluge Valve w/ Double Interlock Trim
• Isolation Valve• Pressure Switch (Air)• Pressure Switch (Water)• Air Compressor• Air Maintenance Device
PREACTION SYSTEM COMPONENTS
PREACTION SYSTEM
SEQUENCE OF OPERATION
Smoke Detectors (Zone-1) and Pressure Switch (Zone-2) Monitoring the System Air Pressure in the piping are wired in a cross zoned configuration
Activation of smoke detector or operation
of a sprinkler causes following.
• A visual indication on the System Control Panel
• Audible alarm from bell
• Send “Fire” indication to the Fire Alarm System
PREACTION SYSTEM SEQUENCE OF OPERATION
PREACTION SYSTEM SEQUENCE OF OPERATION
Activation of smoke detector & operation
of a sprinkler causes following.
• Visual indications on the System Control Panel
• Audible alarm from bell & sounder cum flasher
• Deluge valve operates
• Water flows in to the system piping and discharges through the ‘opened’ sprinkler.
Manual Operation
• System can be operated manually by operating the Pull Station (Electric or Hydraulic)
• Visual indications on the System Control Panel
• Audible alarm from bell & sounder cum flasher
• Deluge valve operates
• Water flows in to the system piping (if sprinkler is not activated, piping will be filled with water)
PREACTION SYSTEM SEQUENCE OF OPERATION
Operation of Air Compressor
Air compressor maintains constant air pressure
in the system piping.
PREACTION SYSTEM SEQUENCE OF OPERATION