The main role of fire detection and alarm system is to alert the building’s occupants of a developing fire emergency in a
timely manner. This is achieved by identifying a developing fire through either manual or automatic methods and followed
by alerting the building occupants to the fire condition and need to evacuate. In addition to these, other functions include
notification to fire department and shuts down electrical, air handling equipment or special process operations.
Fire Detection and Alarm system consists of mainly three parts, Control Panel, Detectors and Alarm devices.
The control panel is the "brain" of the fire detection and alarm system. It is responsible for monitoring the various alarm
"input" devices such as manual and automatic detection components and then activating alarm "output" devices such as
horns, bells, warning lights, emergency telephone dialers, evacuation/alert messages and building controls.
Voice evacuation systems are specially designed public address systems, typically used during fire situations, which the Life Safety Code requires for certain types of installations. . The system uses spoken messages to evacuate public facilities in an orderly fashion during emergencies.
An Air Sampling Detector consists of a piping or tubing distribution network that runs from the detector to the areas to be protected. An aspiration fan in the detector housing draws air from the protected area back to the detector through air sampling ports, piping, or tubing. At the detector, the air is analyzed for fire products. Air Sampling Smoke Detectors are capable of detecting a fire at its earliest stage.