SHOPPING MALL .... A large open area available to the public - but off limits to vehicles.
The advantages of this concept of enticement of retail therapy includes the ability to purchase almost any item you can think of in a temperature controlled environment without the concerns of road traffic. One disadvantage is the concentration of a large number of people within a relatively small area - which has repeatedly been proven to dramatically increase the risk of FIRE - even where strict policing of a no smoking policy is in place. Further concerns are the evacuation of such a large number of individuals in the shortest possible time and access for Fire Fighting tenders in what has been designed as a vehicle free area. The need for rapid detection of fire or overheat conditions in specific areas within the mall has never been greater.
Within the individual shops, cafe's, restaurants and bars, point type smoke detectors can be clearly identified. Other areas may not be so adequately protected by the same types of detectors. Either because of local environmental conditions which would generate a costly level of detector maintenance or frequent false alarms.
Risk areas not suitable for point type smoke/heat detectors include:-
escalators and lift/elevator shafts, many storage rooms, electrical supply cupboards, multi-storey car parks, ceiling voids, lighting ventilation or extraction systems, floor voids and cable ducts. The monitoring, detection and signalling of overheat or fire conditions in these areas is best achieved by way of a low maintenance combined cable + detector (LINEAR TEMPERATURE SENSING), installed at the exact point of risk. The cable not being reliant upon favourable air flows for fast response times and not subject to any minimum length exposure requirements in order to achieve pre-specified alarm temperature levels.