摘要
液化天然气(Liquefied Natural Gas,LNG)的闪蒸气(Boiled Off Gas,BOG)产生与处理过程关乎LNG接收站能否长期运行的安全性和稳定性,一旦该过程发生事故将造成不可想象的灾难性事故。研究旨在针对LNG接收站BOG产生与处理过程中存在的危险因素开展危险源辨识,通过实地调研与事故经验相结合的方法,对LNG接收站BOG产生与处理过程危险源进行评价单元划分,运用道化学火灾爆炸危险指数评价法进行安全风险评价。研究结果表明,LNG接收站BOG产生与处理过程中火灾爆炸危险等级多为高和非常高等级,若通过安全和管理措施的补偿,各单元的火灾爆炸危险等级均能有效降低至中等及以下。LNG接收站BOG产生与处理过程中各单元的危险度可以通过增加针对性的安全措施和新型管理方法予以控制,同时合理分配安全措施和科学安排管理亦能对LNG接收站BOG产生与处理过程进行有效风险管控,降低LNG接收站BOG事故发生概率,保障LNG接收站安全运行。
The formation and handling process of LNG BOG is crucial to the safety and stability of LNG terminal in the long-term operation.If an accident happened during the above-mentioned process,the consequence can be catastrophic.This paper aims to carry out hazard identification for the risk factors in the BOG formation and processing in LNG terminal.Through the combination of on-site investigation and lessons learnt on previous incidents,the risk sources of LNG BOG formation and processing are divided into assessment groups,and the safety risk assessment is undertaken using the Dow s Fire and Explosion Index risk assessment method.The results show that the fire and explosion risk level of LNG BOG formation and handling is mostly high and very high.If the design safety and procedure management mitigation measures are adopted,the fire and explosion risk level of each risk group can be effectively reduced to medium and lower level.The results show that the risk of each risk group in the BOG formation and processing of LNG terminal can be lowered by more specific and targeted safety measures and applicable procedure management methods,and optimum application of safety measures and scientific management can also reduce the risk of BOG formation and processing in LNG terminal so as to reduce the occurrence of BOG incidents in LNG terminal and ensure the safety for LNG terminal.
作者
汪侃
岳修维
Wang Kan;Yue Xiuwei(College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai,201306,China)
出处
《天然气与石油》
2020年第6期114-121,共8页
Natural Gas and Oil
基金
上海市“科技创新行动计划”软科学重点项目(20692193100)。
