Fire Detection and Alarm Systems

Fire detection and alarm systems detect the initial smoke or heat released from a fire to provide an early warning, 24 hours a day, 7 days a week, allowing premises to be evacuated, emergency services notified and plant to be shut down / activated as necessary. Manual call points (“Breakglass” devices) can be fitted to the system a strategic locations to allow manual activation of the alarm system.

The commonly used type of detector is smoke detector although other types include Heat, Flame (UV, I.R.), and Beam. Very Early Smoke Detection Apparatus (VESDA) systems can also be used to monitoring samples of the air for smoke particles.

When a detector operates it electronically notifies the alarm system of the danger. The alarm system activates audible devices within the system loop. The audible devices used are Electronic Sounders, Bells and Sirens. For high ambient noise areas, audible alarms supplemented by visual/flashing beacons are used. Public Address Voice Activation (PAVA) can also be used in large buildings (Shopping Centres, Airports, etc). These alarm systems can also send a signal where appropriate to activate fire suppression systems.

There are 3 types of fire alarm systems: Conventional - Radial type Provide zonal / area indication of fire only Addressable - Loop type Provide unique address and text message for each device Radio - Wireless system

Where addressable systems are used there are 2 types of protocol/software used.

Open Protocol, where software, hardware and technical support is available from more than one manufacturer or supplier.
Closed Protocol where software, hardware, and technical support is only available from a single manufacturer.

Argus design and install open protocol systems to enable us to select the best products for the application and allows flexibility for the customer once the integrated solution is complete.

The ability to integrate these products and services as part of a full turn-key fire protect solution means that Argus are the preferred fire contractor used to integrate Fire Alarm and detection systems.

For further information of the gases used, benefits and disadvantages, typical designs and other technical data available in the technical library or contact us.