FIRE EXTINGUISHING SYSTEM WATER
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Technical characteristics
- Extinguishing agentWater
Description
FIRE EXTINGUISHING SYSTEM WATER
It is the most widespread type of fire extinguishing systems. Automatic installations of water fire extinguishing (AUVPT) gained the distribution in connection with availability and low cost of water as fire extinguishing substance. Water is the most widely applied means of suppression of the fires connected with burning of various substances and materials. Advantages of water are its low cost and availability, rather high specific heat, high hidden warmth of evaporation, chemical inertness in relation to the majority of substances and materials. To shortcomings of water high conductivity (especially in case of use of water with the additives increasing its fire extinguishing and operational properties), rather low moistening ability, insufficient adhesion belong to object of suppression, and also probability of emergence of damage to object of protection (passages, a namokaniye, damage of property). For increase of fire extinguishing efficiency of water special foam-forming additives are used (on the basis of surface-active substances) which sharply increase the moistening ability, interfere intake of oxygen in a burning zone, cut a potrebny consumption of water. As a rule, water-foamy solutions are used for suppression of the fires in the chemical, petrochemical industry for suppression of tanks, aviation hangars, production rooms and technological operations in which alcohols, solvents and other combustible and flammable liquids address.INSTALLATION OF WATER FIRE EXTINGUISHING
— set of stationary technical means of fire extinguishing by production of fire extinguishing substance - waters. Installations of fire extinguishing have to provide localization or elimination of the fire. Automatic installation of fire extinguishing (AUPT) — the fire extinguishing installation which is automatically working at excess by a controlled factor (factors) of the fire of threshold values in the protected zone. Distinctive feature of automatic installations is performance by them and functions of the automatic fire alarm system. At the same time, all automatic installations of fire extinguishing (except sprinkler) can be put in action in the manual and automatic way. Sprinkler installations of fire extinguishing are put in action exclusively automatically.
CLASSIFICATION OF INSTALLATIONS OF WATER FIRE EXTINGUISHINGINSTALLATIONS OF WATER FIRE EXTINGUISHING as sprinklers are subdivided on:
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THE WATER FILLED INSTALLATION
Installation at which bringing nutritious and distributive pipelines are filled with water. Installation is intended for work in the conditions of positive temperatures.AIR INSTALLATION
Installation at which the bringing pipeline is filled with water and nutritious and distributive pipelines are filled with air.AIR-AND-WATER INSTALLATION
Installation at which the bringing pipeline is filled with water and nutritious and distributive pipelines periodic, seasonally, are filled with water or air.DRENCHER INSTALLATION
It is applied, as a rule, to protection of rooms with the increased fire danger when efficiency of fire extinguishing can be reached only at a simultaneous irrigation of all protected area. Drencher installations apply, besides, to an irrigation of vertical surfaces (fire-prevention curtains in theaters, technological devices, tanks with oil products, etc.) and creations of water veils (protection of apertures or around any device).STRUCTURE OF AUTOMATIC INSTALLATION OF WATER FIRE EXTINGUISHING:
- pump units (the main, reserve, feeds);
- distributive pipelines;
- sprinklers (sprinklers);
- incentive systems;
- knots of management;
- shutoff valves;
- capacities (tanks), etc.
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FIRE EXTINGUISHING SYSTEM WATER