The automatic sprinkler and fire alarm system shall be designed to extinguish a fire in its early stages by the use of water and simultaneously sounding an alarm to summon help. Pipe work fitted with sprinklers at regular intervals is connected to a reliable water supply. Each sprinkler is an automatic heat sensitive valve, which opens independently in the event of fire to discharge water on to the seat of the outbreak. Only the sprinkler or sprinklers affected by fire operate, and the opening of any one sprinkler immediately sounds an alarm.
Generally the sprinkler system shall be provided in basement floor, air conditional areas. The sprinkler heads are to be fixed in to gi pipes of sizes 25mm to 100mm to suit the hydraulics of the system and confirming to the guidelines. The entire piping system shall be capable of withstanding test pressure of 15kg/sq cm. Piping shall be done by means of threaded joints up to 50 mm dia. For sprinkler system piping attached to structural members of the building suitable type of hangers of steel bars, angles, or threaded steel pipe painted with synthetic enamel paint as per nfpa 13 shall strictly provided. Due care shall be taken that sprinkler heads are not applied with paint at the time of painting the pipe and fittings.
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