Fire Detection and Alarm SystemFIRE DETECTION AND ALARM SYSTEMS


Fire detection systems are designed to discover fires early in their development when time will still be available for the safe evacuation of occupants. Early detection also plays a significant role in protecting the safety of emergency response personnel. Property loss can be reduced and downtime for the operation minimized through early detection because control efforts are started while the fire is still small. Most alarm systems provide information to emergency respondents on the location of the fire, speeding the process of fire control.

 

 

Introduction of Fire Detection and Alarm System

Fire detectors are designed to detect one or more of the three characteristics of fire-smoke, heat and flame. Besides it every fire detection system must include manual call points (break glass), so that in the event of fire can be of immediate help.
During a fire importance of activation of the occupants through alarm or bell is of at most vital and this can performed through alarm system.

Fire alarm system shall be designed to provide round the clock security against fire in the complete power plant area.

Microprocessor based addressable analogue type fire alarm and detection system to be used for various building/areas to detect and provide alarm signal in the main fire alarm panel to be located in the central control room. Fire alarm will be repeated in a repeater alarm panel in the fire station.
Main fire alarm panel annunciation shall be located in the control building. A repeater panel shall be provided in the fire station. Total no of annunciation shall be based on the specific plant requirement.
One (1) siren of 10 Km range is envisaged to provide warning in the event of fire.
In addition to it, PLC panel shall be provided at fire pump house and foam pump house.

Why Fire Detection and Alarm Systems Required?

Fire detection and protection system is required for the following reasons:

  • To detect fire in the area during the initial stage.
  • To alert occupants, so that they escape the building safely.
  • Summon trained personnel to take charge of controlling the fire as quickly as possible.
  • To initiate automatic fire control and suppression system.
  • To support and supervise the fire control and suppression system.

Area to be Covered under Fire Detection and Protection System

Sl. No. Fire Detection System Area to be Covered
1 Smoke Detection System
  • Main plant control room
  • Control equipment rooms
  • Switch gear and battery rooms (including MCC/Control rooms of SG, Turbine and Generator switch yard
  • MCC/Control rooms of all the auxiliaries of BTG and BOP auxiliaries like Coal handling plant, Ash handling plant, Compressed air plant, Fuel oil plant, Raw water/fire water pump house, CW pump house, Water treatment plant, Effluent treatment plant, HVAC system, Chemical treatment plant and other miscellaneous pump house.
  • Switch gear/MCC control rooms
2 Linear heat sensing cable detection system
  • Cable galleries
  • Coal Conveyors
  • Fuel oil tanks
3 Quartzoid bulb heat detection system
  • Equipment protected by HVW spray system and fuel oil tanks
  • Fuel oil tanks
  • Fuel skids and pump houses protected by MVW spray system.
4 Infra-red Detectors
  • For all conveyors (one near the head end of each conveyor and the other mid way between the head and tail pulley shall be provided)

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