关键词: 危险化学品装置, 居民区, 安全距离

Abstract: Most of the hazardous chemicals production units have some hazardous characteristics because of their production of flammable, explosive, toxic, and corrosive products in high temperature and high pressure working environment. Therefore, once there are major explosions, fires and poisoning accidents, will cause serious consequences to the residential areas around the devices. Taking certain LNG refueling station as an example, the safety distance method, the safety distance method based on calculation of accident consequences and the external safety protection distance calculation method are adopted to determine the safety distance between the LNG storage tank device and the residential areas. Through comprehensive analysis on the results of the three methods, this paper provides some technical guidance for the location selection, safety distance determination and risk evaluation of hazardous chemicals production units and storage installations.

Key words: dangerous chemical installations, residential areas, safe distance