Оценка интенсивности орошения для пожарных лафетных стволов

Abstract

Purpose. The paper considers methods for determining discharge density when extinguishing agents are discharged via monitors. The work is aimed at developing methods for objective and practically relevant discharge density assessment when extinguishing agents are discharged via monitors. To achieve the purpose the following tasks have been solved: – analysis of monitor discharge density assessment approaches has been carried out, their advantages and disadvantages as well as limited scope of application for monitors have been established; – scientifically based approach has been developed for discharge density practical assessment when extinguishing agents are discharged via monitors under various conditions, aimed at optimizing labour and time costs during testing. Methods. Empirical observation and calculation-based method has been used. Findings. Scientifically based method has been developed for discharge density assessment when extinguishing agents are discharged via monitors under various conditions, which requires practical testing. Research application field. Assessment method of discharge density when extinguishing agents are discharged via monitors can be used to assess discharge density both under standard monitor test conditions (monitor axis slope angle equals 30°, solid jet) (in accordance with GOST R 51115–97) and with other different variations of monitor slope angle and spray discharge angle. This method has practical significance in technical decisions justification when designing monitor-based fire safety systems at the facility. Conclusions. The proposed method will allow assessing monitor discharge density. It is worth noting that it can be used to assess discharge density both under standard monitor test conditions (monitor axis slope angle equals 30°, solid jet) (in accordance with GOST R 51115–97) and with other different variations of monitor slope angle and spray discharge angle. The proposed method’s main advantages include reducing investigators labour costs, test time optimization and full-scale tests partial transferring into calculation. The proposed method requires practical testing, introducing correction factors if necessary and further implementation when updating regulations in the field of monitor requirements rationing and designing monitor-based fire safety systems.