ACTIVE FIRE PROTECTION OF WOODEN CONSTRUCTIONS OF CHURCHES DOMES WITH APPLICATION OF WATER FIRE EXTINGUISHING SUBSTANCES

Water is a traditional fire extinguishing substance, widely used for active fire-prevention protection of objects. From general theoretical preconditions, as well as from a specially conducted research, it follows that the fire extinguishing efficiency of water increases with the increase of dispersion of droplets. Currently there are a lot of scientific works intensively conducted on studying of efficiency of application with fine-air water. There are entire classes of objects for which the finely dispersed water is the most preferable fire extinguishing substance. At the same time there are scientific publications, in which the physical and technical problems of the application of finely dispersed water shown, in particular cases of extinguishing the fires of high-energy solid combustible materials. These difficulties can be overcome through the introduction of specific substances (additives) in the water, that is, through the creation of water fire extinguishing substances. Such substances are already being applied in different facilities, which are designed for fire protection of various objects. The aim of this work is the solution of the problem of ensuring the active fire protection of wooden construction of churches domes with the application of water fire extinguishing substance developed. This work presents the results of directed synthesis of water fire extinguishing substance that has received technical name FSG-2. The presented results of the laboratory and full-scale fire tests prove the improved physical-chemical properties of the synthesized substances (in comparison with plain water) in the interests of fire fighting. It is shown that by using FSG-2 are being implemented: a cooling effect, inhibiting effect, flegmatization of fiery and condensed combustion, screening and isolating the source of burning with the help of hydrogel and the polymer compounds. It also should be taken into account that the reduced effects of the migration of FSG-2 from vertical and inclined surfaces due to the implementation of its gel-forming properties. The presented researches establish the applicability of the developed water fire extinguishing substance for active fire protection of wooden constructions of churches domes, which, by the end, allow to improve the level of fire safety of the object with mass stay of people.