Reliable fire extinguishing systems are essential to ensure safety in fire hazardous areas. The water spray fixed system is beneficial in such places. It is a different variant of the sprinkler system. This System extinguishes fire effectively where fire spread rapidly goes out of control within a short time. It is definite and rapid. These systems are generally used for fire protection in flammable liquid and gas storage tanks, pumping equipment, electrical equipment such as transformers, oil switches, rotating electrical machinery, etc. For more information, follow the article. What is Water Spray Fixed System? A water spray fixed system also known as the transformer protection system is an automatic or manual fixed pipe system that discharges water under pressure in a specific directional pattern. The water spray system discharges high water but causes less damage compared to the conventional sprinkler system. It is free from chemicals and no risk of asphyxiation compared to gas suppression systems. Working Principle of Water Spray Fixed System The System operates on a deluge system for fast application of water in the System. It is a hydrated pipe system that means water is always in the pipe in a normal situation, and all sprinkler heads are open. When the detection system detects heats or fire, it sends a signal to panels. The fire alarm initiates alarm, and the control panel emits a signal to the deluge valve to open up. The deluge system permits the water following out of the nozzles in a specific directional pattern to extinguish the fire. This System can be conducted either automatically by automatic fire detection and alarm system or manually or both. Variations Of Spray Nozzles Spray nozzles are a simple device that breaks apart a fluid flow into a spray pattern. For fire protection, there are two variations of spray nozzles: High-Velocity Water Spray Nozzles: The nozzles are internal swirl plate type open nozzles. It is used in a fixed water spray or deluge system to protect fire hazards at transformers, circuit breakers, turbo-alternators, lube oil systems, oil-fired boilers, and heavy oils flammable liquids where the flashpoint is above 65C. Medium Velocity Water Spray Nozzles: The nozzle has an external deflector that discharges water in a cone-shaped directional pattern of small droplet size. The water is uniformly distributed over the surface. These spray nozzles systems are used in the flammable liquid where the flashpoint is below 65C and paint storage areas, boiler or switchgear or generator rooms, exhaust ducts, packing areas comprising corrugated boxes, woods, and so on. Also, it can extinguish the fire from polar solvents or alcohol. How does the Extinguishing Process happen? These Extinguishing systems protect objects and rooms which are susceptible to rapid outbreaks of fire. The fire hazards control by cooling, smothering, diluting, or emulsifying the flammable or combustible particles and reducing surface temperature. How this process works, checks below: Smothering Process: Water spray is converted to steam by the burning material heat and expands the volume more or fewer times in this process. The smoke envelops the fire zone and excludes oxygen. Thus the fire is extinguished. Cooling Process: The cooling process develops through the conversion of water to steam. Then, the water particles absorb the heat from the surface of the burning substance. As per FM global reference, 1 lb of water absorbs 1150 Btu at 60 F during the steam conversion process. When there is no more burning material in the flammable vapors, and the substance’s surface is cooled, the fire is extinguished. Emulsification process: The water and oil are forced to combine rather than a homogenous solution, that creates mechanical agitation in this System. This emulsion shapes a blanket over a fire and coats the adjacent surfaces to prevent the fire’s spread. Dilution Process: The water-dissolvable fluids are typically a minor factor for protection from fire. Final Words Safety is essential, no matter what you do, where you live. If you want to save your property and life, you have to know along with arranging the proper fire fighting system at your place. We hope from this report; you will get all the necessary information about the water spray fixed system.