氨制冷系统安全完整性等级的确定  

Determination of Safety Integrity Level of Ammonia Refrigeration System

作　　者：李力[1] 许开立[1] 王犇[1] 姚锡文[1] LI Li;XU Kai-li;WANG Ben;YAO Xi-wen(School of Resources & Civil Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学资源与土木工程学院

出　　处：《东北大学学报（自然科学版）》2019年第7期1034-1038,共5页Journal of Northeastern University(Natural Science)

基　　金：国家重点研发计划项目(2017YFC0805100)

摘　　要：在安全完整性等级的评价过程中定义了风险概率降低值Qrpr,并给出了Qrpr的计算公式.Qrpr是用来表征风险概率降低的大小,其数值大小与系统安全完整性等级所要求的失效概率存在对应关系,进而可以确定系统的安全完整性等级.在经典的HAZOP-LOPA评价方法中融入Qrpr的计算,可以更加准确、快速地评价系统的安全完整性等级.采用该方法对氨制冷系统进行安全完整性等级评价.分析了氨制冷系统可能发生的泄漏爆炸事故,并对其安全相关系统进行了安全完整性等级评价,验证了该方法的有效性和可行性.The risk probability reduction quotient( Q rpr )is defined during the evaluation of the safety integrity level, and the formula of Q rpr is given. Q rpr is used to characterize the reduction in the risk probability. The value of the Q rpr corresponds to the failure probability required by the system safety integrity level, and then can be used to determine the safety integrity level. Integrating the Q rpr calculation into the classical HAZOP-LOPA evaluation method can more accurately and quickly evaluate the safety integrity level of the system. This method is used to evaluate the safety integrity level of the ammonia refrigeration system. The leakage and explosion accidents in the ammonia refrigeration system were analyzed, and the safety integrity level of the safety-related system was evaluated to verify the effectiveness and feasibility of the method.

关 键 词：安全完整性等级 风险概率降低值 HAZOP-LOPA 氨制冷 失效概率 

分 类 号：X913.4[环境科学与工程—安全科学]