ABSTRACT
Water sprinklers provide an automatic spray dedicated to the area of fire outbreak. Pipeline flow switches will alert the local fire service in addition to operating an internal alarm system. The Loss Prevention Certification Board was formed in 1985 as an incorporation of the fire Offices' Committee (FOC), the fire Insurers' Research and Testing Organisation and the fire Protection Association. Multiple control system – a heat-sensitive sealed valve controls the flow of water to a small group of open sprayers attached to a dry pipe. Sprinkler pipe installations downstream of the alarm and control valves should be sized by hydraulic calculation, with regard to system pressure and friction losses. A drencher fire control system provides a discharge of water over roofs, walls and windows to prevent fire from spreading either from or to adjacent buildings. The higher the number the larger the fire that the extinguisher is capable of controlling as determined under British Standard test conditions.
