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The technical key of gas station safety management

automobile is one of the symbols of modern social civilization. With the continuous growth of the national economy and the continuous improvement of the quality of life of urban residents, China's car ownership II. Closed loop control has shown a momentum of rapid growth, resulting in the sharp expansion of the number of car gas stations. Most of Youzi gas stations are located in prime locations with developed transportation, and vehicles. Personnel exchanges are frequent, so fire and explosion prevention work is particularly important. Gas stations are indeed a potential "fire dragon", but they are not invincible. As long as the project is approved in strict accordance with the procedures, and the design is in strict accordance with the standards. Construction and management, gas station fire and explosion accidents can be completely eliminated. The key is to technically control four passes:

site selection and reasonable determination of safety distance

safety distance of gas station depends on two factors: internal factors and external factors

internal factors mainly refer to the building scale of the gas station. The larger the scale, the greater the safety distance; The smaller the scale, the smaller the safety distance. The current national standard gb50156-2002 "code for design and construction of automobile gas filling stations" (hereinafter referred to as the "code") divides the building scale of gas stations into three categories, from large to small, which are first-class, second-class and third-class. There are two indicators to determine the level of a gas station. When the total volume is ≤ 180m3, ≤ 120m3, ≤ 60m3, or the volume of a single tank is ≤ 50m3, ≤ 50m3, ≤ 30m3, it is determined as level I, level II and level III in turn. In order to reduce the risk of potential oil fire and explosion accidents in gas stations, the Code stipulates that class I gas stations should not be built in urban built-up areas, so as to minimize the storage of inflammables and explosives

external factors mainly refer to the nature and scale of the building facilities around the gas station. There are many kinds of external factors, which are difficult to list one by one, mainly including important public buildings, civil buildings, open fire or spark emitting places, enterprise factories and mines, traffic roads, power lines and communication lines. Buildings and facilities of different types and sizes have different safety distance requirements

the safe distance between the gas station and various buildings and facilities is mainly calculated from the oil tank (outer wall), vent pipe orifice (center line) and fuel dispenser (center line). Among them, the safety distance requirements for oil tanks and ventilators, including the pipe orifices of 3jing chemical, Xinyue chemical, 3ling plastic, Dongli, Sumitomo chemical, and Sailu, as well as the fuel dispenser, are the strictest between the office building of the party and government organs above the prefecture level, the gymnasium (Theater) with more than 1500 seats, the school with more than 500 people, the library with more than 500000 books, the station and other important public buildings, regardless of the level and size of the gas station, which is 50m; The safety distance from general roads is low, only 5 ~ 8m. The safety distance requirements between gas stations and civil buildings are determined according to the building scale. For example, the safe distance between the oil tank, vent pipe orifice and fuel dispenser of the tertiary gas station and the residential building with a total construction area of 1000m2 to 5000 (excluding 5000) m2 is generally 12m; The safety distance between residential buildings with a construction area of less than 1000m2 and the total construction continues to increase the installed proportion of domestic materials, which is generally 10m. According to this standard, except for individual gas stations, the current urban gas stations generally meet the standard requirements

the layout of the station is standardized, and the spacing between each other

how should various buildings and facilities in the gas station be arranged, that is, how to determine the fire safety distance between various facilities in the station? The code also has detailed provisions, with a total of 26 items, in order to prevent fire accidents caused by mutual interference between various facilities in the station. For general gas stations, there are mainly four requirements for internal safety distance: first, the safety distance between buried gasoline and diesel oil tanks is 0.5m; The safe distance between the vent pipe orifice and the closed oil unloading point is 3M; The safe distance between the oil tank and the vent and the station building where people enter and leave is 4m, and the safe distance between the oil tank and the vent and the power transformation and distribution room is 5m; The distance between the fuel dispenser and the station building and the power transformation and distribution room is 5M and 6m respectively

in order to eliminate the "congenital" hidden dangers in the buildings and facilities in the station and prevent the fire and explosion accidents caused by the interaction between refueling vehicles, the code expressly stipulates that the fire resistance rating of the station building and its ancillary buildings in the station should not be less than grade II, the refueling roof should not be constructed of combustible materials, the vehicle entrance and exit should be set separately, and the roads in the station should not be asphalt pavement, etc

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