Deluge water spray system are designed and provided in accordance with NFPA standards and local civil defence requirements for Automatic operation. The design density of discharge depends upon the area to be protected. The system consists of Fire water pumps, Deluge valve, isolation valve, spray nozzles, quartzoid bulb detectors and piping etc. Deluge valves can be actuated either hydraulically or electrical based on the required and design philosophy.
Deluge valves are specialized control valves that open to allow water flow through a deluge piping system upon activation. These systems are typically used in high-hazard areas such as chemical storage facilities, power plants, and offshore platforms, where rapid and widespread water application is necessary for fire suppression.
A deluge fire protection system has unpressurized dry piping and open sprinkler heads. The system is directly connected to a water supply and when the system is activated, a deluge valve will release the water to all the open sprinkler heads. The valve is opened when activated by a heat or smoke detection system.
A deluge system offers several advantages over a traditional fire sprinkler system. In a traditional sprinkler system, the pipes are filled with water and the sprinkler heads are closed. A deluge system is a dry system which means it is not at risk for having frozen pipes. The pipes of traditional sprinklers can freeze when exposed to cold temperatures because they are filled with water. In addition, a deluge system offers a quicker response to a fire by releasing water through all its open heads at once. A regular sprinkler system with closed heads must activate each sprinkler head individually. Therefore, the deluge system is more effective in high hazard situations.
The system is used commonly for protection of Transformers, Fuel oil storage tanks, Lube or hydraulic oil skid, Cable basement or cable room and for other equipment.
