JUSTIFICATION OF THE EQUIPMENT OF THE 750/330 KV VRU TERRITORY OF VP KHAES WITH PRIMARY FIRE EXTINGUISHING EQUIPMENT

Abstract

The growing trend of fires at electric power facilities, including open distribution facilities (PLAs), creates the basis for taking measures for their prevention and prompt response, including with the help of primary fire extinguishing means. Currently, the Fire Safety Rules in Ukraine provide for the installation of fire shields on the territory of objects with an area of more than 200 m² at the rate of one shield (stand) per 5,000 m² of protected area. However, this requirement does not take into account the specifics of the territory protected by such fire shields and the expediency of using the means they are equipped with in the conditions of intended use. The purpose of this work is to determine the required number and type of primary fire extinguishing means to ensure fire safety of the territory of the VRU 750/330 kV NPP. On the basis of the conducted research of the available fire load, engineering systems of the territory of the VRU 750/330 kV NPP, its fire prevention condition was established. The analysis of the existing normative documents showed that there are no requirements for equipping the territory of the VRU with fire shields and their equipment with primary fire extinguishing means, depending on the specific fire hazard of such objects. On the basis of a system analysis using three alternative solutions, the most rational choice was made, depending on the established assessment criteria, namely: the installation of fire panels equipped with exactly those means that can be applied, taking into account the peculiarities of their location on the territory of the VRU 750/330 kV NPP in fire-hazardous places. Based on the results of computer modeling, the area of the fire on the territory of the VRU, which can develop before the use of the primary fire extinguishing agent, as well as the maximum distance from the fire shield to the center of the fire, is substantiated. It has been established that to ensure fire safety of the territory of the 330 kV VRU, at least 4 fire shields should be provided and an approximate scheme of their placement is proposed, and for the territory of the 750 kV VRU, it is necessary to provide at least 9 fire shields with an approximate scheme of their placement. Based on the threat and danger of the territories of the VRU 330/750 kV NPP, it is proposed to equip the fire shields with exactly those means that can be used in the event of a fire.