The utility model relates to fire-fighting equipment for extinguishing large-scale forest, peat, soil, steppe, industrial and emergency transport fires and the creation of barrier strips in front of the edges of the fires.;To improve the efficiency and reliability, the device for preventing and extinguishing large-scale forest, industrial and emergency fires contains a container of fire extinguishing substance components, means for mixing and foaming the fire extinguishing substance components to produce a fire extinguishing substance in as upright or at an angle to the vertical of ejector mixers-foam generators and means for feeding components to fire of the substance from the containers of the components of the fire extinguishing agent into the means of mixing the components of the fire extinguishing agent and foaming the mixture of components of the fire extinguishing agent, made with the possibility of receiving and feeding into the fire zone and the barrier strip as a fire extinguishing agent of the foamed silica gel forming fast-hardening foam obtained by mixing and foaming supplied to the means of mixing and foaming of the components of the extinguishing agent - component A in the form of an aqueous solution of a mixture of silicate and sodium and foaming surfactant and component B in the form of an aqueous solution of acetic acid, and with the possibility of supplying the foamed silica gel to the fire zone or to the barrier strip in the form of at least two streams of fast-hardening foam so that jets of quick-hardening contact can overlap foam with the formation of a single combined jet of a quick-hardening foam from a foamed silica gel, extinguishing agent and foaming of the mixture of components of the extinguishing agent a. 10 hp f-ly, 6 ill.
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