FIRE ALARM SYSTEM
An automatic fire alarm system is designed to detect the unwanted presence of fire by monitoring environmental changes associated with combustion. In general, a fire alarm system is classified as either automatically actuated, manually actuated, or both. Automatic Fire alarm systems can be used to notify the people to evacuate in the event of fire or other emergency to summon emergency services and to prepare the structure and associated systems to control the spread of fire and smoke.
Fire Alarm control panel is an electric panel that controls components of fire alarm system. The panel receives information from environmental sensors design to detect changes associates with fire, monitors their operational integrity and provides for automatic control of equipment and transmission of information necessary to prepare the facility for fire, based on predetermined sequence. The panel may also supply electrical energy to operate any associated sensor, control, transmitter or relay.
Smoke detectors have been recognized as being very useful and desirable in providing an early warning of dangerous level of smoke. A smoke detector can warn of a smoldering fire before significant property damage occurs and before the occupants of the structure find themselves in grave danger. When such detectors go in to alarm, they usually generate an audible indicating output. The alarm may audible within the monitored space and may be electronically communicated to a remote monitoring site.
Manual call point is used to allow building occupants to signal that a fire or other emergency exists within the building. It is usually connected to a central fire alarm panel which is in turn connected to an alarm system in the building and often to a local fire brigade dispatcher as well.