Study on reduction of minimum isolation area for ammonia-related enterprises in city
GAO Yu-ge1, GUAN Lei1, LI Hu-sheng1, SUN Xu2, LU Xiao-gang3
1. China Academy of Safety Science and Technology, Beijing 100012, China; 2. Beijing Sales Branch, PetroChina Company Limited, Beijing 100101, China; 3. China Petroleum EDI Safety & Environment Protection Co., Ltd., Qingdao 266071, China
Abstract: In recent years,accidents related to liquid ammonia happened more frequently in China.Both HAZOP and LOPA methods are utilized to reveal the existed deficiencies in protection measures adopted by ammonia-related enterprises that locate at cities in China.The corresponding protective measures are put forward for the purpose of essential safety.In addition,all the areas in which the concentration of ammonia is higher than 30 mg·m-3 are suggested to be classified as the minimum isolation zone for ammonia leakage.The results show that the accident risk is high and unacceptable when the protection measures are insufficient;the risk of accident related to ammonia can be reduced to a tolerable level when the protective measures given by this research are adopted.If the protection measures are effective,the minimum isolation areas can be limited within the scope of the ammonia-related enterprise.In view of the open-air liquid ammonia reservoirs and the ammonia freezing tunnels,a special liquid ammonia workshop or isolation facility is suggested to construct,which shall be equipped with ammonia alarm device,exhaust hood and water spray,to control the ammonia leakage hazard in the special liquid ammonia workshop or isolation facility.
高玉格, 关磊, 李湖生, 孙旭, 卢晓刚. 城市涉氨企业缩小最小隔离区域范围的探讨[J]. 现代化工, 2019, 39(S1): 9-14.
GAO Yu-ge, GUAN Lei, LI Hu-sheng, SUN Xu, LU Xiao-gang. Study on reduction of minimum isolation area for ammonia-related enterprises in city. Modern Chemical Industry, 2019, 39(S1): 9-14.