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The Fire Alarm System buy in Mumbai
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The Fire Alarm System

The Fire Alarm System

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The early detection of fire is vital for any fire-fighting operation. Smoke and heat detectors capable of detecting fire in their incipient stages therefore play a vital role. Well-designed detection systems should be provided in buildings for all the floors and at all ceiling voids. For cabins of very small size, heat detectors may be used in view of their cost-effectiveness. If overall cost is the over-riding criteria, then detectors must be located at least in the 'return air' areas where smoke can be sensed.

The control panel in the fire alarm system plays an extremely important role in ensuring the overall effectiveness of the system. Typically, a building also has its own air-conditioning system and proper inter-linking must be maintained between these two systems to prevent fire spreading to other areas. Perfect matching has to be made in the two systems for this purpose.

A recent trend has been to have a separate air-handling unit (AHU) for every floor. The AHU normally supplies fresh air to the supply ducts and the return air is circulated through false ceiling voids, which are used as return air paths. Closing the dampers located at strategic points within the air-conditioning system prevents the spread of combustible particles. Arrangements should also be made to activate fire signals by the provision of alarm control panels, which start up the exhaust fans. The control panel must also be provided with a suitable public-address system so that instructions can be given to the occupants of the various floors. Evacuation instructions are also transmitted through this system during emergencies. The 'All Call' switch enables the control room operator to address all floors simultaneously. The capacity of the amplifier should therefore be suitably designed.

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