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• Water is still the overriding fire suppression medium worldwide. By adapting its own method of application, water may even be employed to extinguish or control fires in most conditions where it wouldn’t normally be considered appropriate. This bulletin deals with water spray installments aside from sprinklers, which have been dealt with in different bulletins.

• Definition a water spray system is on the supply via a mechanically or manually actuated flow control valve.
• Which disperse over the secure location. Automatic valves are actuated by means of a detection device installed at the secure area. Kinds of system The 2 Kinds of water spray method are: • High speed system (HV) HV systems are primarily utilized to extinguish fires between similar or oils combustible liquids.
• Extinguishment of flames by HVs is accomplished by a mix of these:
• Cooling of the burning oil reduces the vaporization rate • Steam produced in the flame zone triggers a smothering influence through oxygen displacement • Dilution of this burning merchandise. A water miscible merchandise e.g.: alcohol, may be diluted to a degree at which it doesn’t burn. The result is temporary and the mix will separate again punctually. Medium speed systems (MV) MV systems are primarily utilized to protect structures, storage and plant vessels out of radiated heat and direct flame impingement.
Applications include:
• the full outer surface protection of bulk liquefied gas pressure vessels to stop container collapse and the resulting BLEVE (boiling liquid expanding vapor explosion); majority flammable liquid storage tanks; constructions behind poisonous plant and equipment such as conveyors. Additionally, fire prevention could be reached especially where flammable gas flows will likely happen.
• The activity of this spray on the flow helps dissipate the gas quickly and stop concentrations from reaching their flammable limits. System actuation most programs may be actuated both mechanically and manually.
• In little automatic methods, water has been kept back from the open heads on the supply piping by an automated controller which incorporates a heat sensing device, including a frangible glass bulb. Heat from the fire breaks the bulb that permits the vale to water and open to flow into the release nozzles.
• Additionally, a further pipe system comprising glass bulb sensor heads is set up in the secure area and can also be joined to the deluge valve. The latter ducts is full of compressed air in a higher pressure than the machine water pressure.
• This retains the deluge valve shut. After the sensor head actuates the air flows along with the machine water pressure forces open the deluge valve and water flows through the supply piping to the release nozzles.

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