Fire Alarm System (FAS)

Fire Alarm System (FAS)

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  • A fire alarm system is number of devices working together to detect and alert people through visual and audio appliances when smoke/fire is present. These alarms may be activated from smoke detectors, and heat detectors. They may also be activated via Manual fire alarm activation devices such as manual call points or pull stations.
  • Some fire alarm systems utilize emergency voice alarm communication systems (EVACS) to provide pre-recorded and manual voice messages. Voice Alarm systems are typically used in high-rise buildings, arenas and other large “defend-in-place” occupancies such as Hospitals and Detention facilities where total evacuation is difficult to achieve.
  • Voice-based systems provide response personnel with the ability to conduct orderly evacuation and notify building occupants of changing event circumstances.
  • In high rise buildings, different evacuation messages may be played to each floor, depending on the location of the fire. The floor the fire is on along with ones above it may be told to evacuate while floors much lower may simply be asked to stand by.
  • Manually actuated devices; also known as fire alarm boxes, manual pull stations, or simply pull stations, Break glass stations, call points or Buttons. Devices for manual fire alarm activation are installed to be readily located (near the exits), identified, and operated.
  • Automatically actuated devices can take many forms intended to respond to any number of detectable physical changes associated with fire: convicted thermal energy; heat detector, products of combustion; smoke detector, radiant energy; flame detector, combustion gasses; fire gas detector, and release of extinguishing agents; water-flow detector. The newest innovations can use cameras and computer algorithms to analyze the visible effects of fire and movement in applications inappropriate for or hostile to other detection methods.