SMOKE DETECTION SYSTEM
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.
Fire in buildings usually start at one place and then spread to other areas through shafts and other openings. Depending on the location, quantity and type of combustible materials stored present in and around such buildings, the fire manifest themselves in areas rather remote from the original location. It is therefore very important to establish the origin of fire as, by the time fire-fighting personnel arrive at the site, considerable confusion can already have been caused. For this purpose, control panels must have the feature of indicating and highlighting zones, which were in operation first. A suitable ‘mimic diagram’ should also be provided along with each control panel to enable fire-fighting personnel to reach this zone in shortest possible time. The layout for this must be clear in every respect and must take into account the fact that the fire-fighting personnel may be operating in the building for the first time. The control panels, often referred to as the ‘nerve centers’ of the fire-fighting systems of buildings, are therefore of crucial importance.
We providing two type of smoke detection systems.
1. Conventional fire alarm panel,
2. Addressable smoke detection panel,
CONVENTIONAL SYSTEMS
Conventional systems are designed to give a basic zonal and alarm call to occupants of a building. Panels are standard or high specification and usually only go up to 32 zones any bigger and an addressable would be far more economical. All systems installed by our company comply with BS5839Pt1 1988 including all current amendments.
Conventional fire detection and alarm systems consist of a central control and indicating panel to which are connected one or more trigger devices and two or more alarm sounders. The control panel itself is also connected to a primary power supply and a secondary standby supply.
Each of the trigger devices – whether manual call points, heat detectors or any other fire detectors – will electrically change the circuit to which they are connected when certain fire conditions are met. The control panel will indicate the circuit on which the alarm has been raised and will activate all the relevant alarm sounder circuits.
ANALOG ADDRESSABLE PANEL
It is a systems, which detects fire early, where in all loop devices in the systems are individually addressed to provide the panel with absolute unique identification of each devices. The systems monitors any changes caused by dust or smoke and then adjusts the calibration accordingly to maintain each sensor at its original sensitivity. The systems carries out a self-test automatically every 24 hours, as well as separate adjustment for day and night.
