Development of optimal characteristics for water spray of extinguisher

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fire-protection system by the probability of the occurrence, that lie in the fact that inlet parameters of the system belong to the domain of its admissible values. Using the example of smoke-protection systems for the high-storied buildings the calculation method for quantitative evaluation of the efficiency of system operation in fire in conditions of stochastic external effects is developed. The calculation results for the buildings of seven designs are represented. The ways of cardinal improvement of smoke-prevention system opeation for the high-storied buildings are shown. FIRE EXTENGUSIHING Effect of Seal Failure in the Premises on the Pressure in Operating Aerosol Extinguishing Generator V. I. Gorshkov, Yu. N. Shebeko, V. Yu. Navtsenya, A. V. Trunev, A. A. Zaitsev All-Russian Research Institute for Fire Protection, Ministry of the Interior, Russia Theoretical and experimental studies of pressure rise in premises with low seal failure in the presence of operating aerosol extinguishing generator (GOA) are carried out. The mathematical model for dynamics of parameters for gaseous atmosphere (pressure, mean volume temperature and aerosol concentration) is developed. Laboratory tests in the chamber with the volume of 50 dm 3 were carried out. The confirmed the ability to predict the overpressure ~P in premises with low seal failure in the presence of operating generator (GOA) by means of use of above mentioned model. Empirical formulas for approximate estimation of maximum in time value Ap are obtained. Technical Abilities and Perspective Use of Aerosol Fire-Extinguishing Measures N. P. Kopylov, V. A. Andreev, V. I. Emelyanov, A. I. Sidorov All-Russian Research Institute for Fire Protection, Ministry of the Interior, Russia The main requirements for generator of fire-extinguishing aerosol, that may be considered as effective measure for volume fire extinguishing, are given. Some aspects of fire-extinguishing procedure are considered. The results of different tests and effect of aerosol-forming compositions and generators on extinguishing efficiency and ability of their real use are analyzed. The main directions for improvement of aerosol fire-extinguishing measures and their use in fire fighting are suggested. FIRE ENGINEERING Development of Optimal Characteristics for Water Spray of Extinguisher V. I. Eremin All-Russian Research Institute for Fire Protection, Ministry of the Interior, Russia The extinguishing mechanism for firers of class A by means of sprayed water is considered. Characteristics of water spray to provide the proper efficiency of hand extinguishers for localization and suppression of such fire sites are specified in accordance with requirements of standards. Use of Aerosol Extinguishing Generator "SOT" in Fire Fighting S. V. Loginov, D. A. Korolchenko "Granit-Salamandra", Moscow, Russia Systems of aerosol, dry chemical and gas extinguishing are compared in the paper. The advantages of volume aerosol extinguishing systems are considered. The problems of