基于SIL评估的LNG加气站安全仪表系统问题分析及改进建议  

Problems analysis and improvement suggestions for safety instrumented system of LNG fueling stations based on SIL evaluation

作　　者：岑康[1] 任国强 王政新 潘成军 王泳龙 邵金凤 李仁科 卢恩苍 CEN Kang;REN Guoqiang;WANG Zhengxin;PAN Chengjun;WANG Yonglong;SHAO Jinfeng;LI Renke;LU Encang(School of Civil Engineering and Geomatics,Southwest Petroleum University,Chengdu Sichuan 610500,China;Sichuan Chuangang Urban Gas Company,Chengdu Sichuan 610000,China;Chongqing Yuchuan Gas Co.,Ltd.,Chongqing 400021,China;Infrastructure Construction Engineering Department,PetroChina Southwest Oil & Gas Field Company,Chengdu Sichuan 610051,China;Chengdu China Resources Gas Design Co.,Ltd.,Chengdu Sichuan 610045,China)

机构地区：[1]西南石油大学土木工程与测绘学院,四川成都610500 [2]四川川港燃气有限责任公司,四川成都610000 [3]重庆市渝川燃气有限责任公司,重庆400021 [4]中国石油西南油气田公司基建工程处,四川成都610051 [5]成都华润燃气设计有限公司,四川成都610045

出　　处：《中国安全生产科学技术》2021年第12期17-23,共7页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(52074237)。

摘　　要：为分析LNG加气站安全仪表系统的功能完备性与可靠性,以3座典型的三级LNG加气站为研究对象,全面开展安全仪表功能辨识、安全完整性等级(SIL)定级与验证,进而提出针对性的改进建议。结果表明:3座LNG加气站的安全仪表系统均存在功能不完备、设备组件缺少失效数据的问题;为满足风险控制要求,三级LNG加气站需设置15个安全仪表功能,其中1个应达到SIL2等级,14个应达到SIL1等级;LNG加气站的安全仪表系统应选用获得功能安全认证的设备组件,并在设计阶段开展SIL评估工作。研究结果可为今后LNG加气站安全仪表系统的设计与管理提供重要参考。In order to analyze the function completeness and reliability of safety instrumented system(SIS)in the LNG fueling stations,three typical third-level LNG fueling stations were selected as the research objects.The identification of safety instrumented functions(SIFs)and the grading and verification of safety integrity level(SIL)were comprehensively implemented,and the targeted improvement suggestions were put forward.The results showed that all the SISs of three LNG fueling stations had the problems of incomplete functions and lacking of failure data for the equipment components.In order to meet the requirements of risk control,fifteen SIFs should be set up for the third-level LNG fueling stations.Therein,one SIF should reach SIL2 level,fourteen SIFs should reach SIL1 level.The equipment components with the functional safety certification should be selected for the SIS of LNG fueling stations,and the SIL evaluation should be conducted in the design stage.The results can provide important guidance for the design and management of SIS in the LNG fueling stations.

关 键 词：LNG加气站 安全仪表系统 安全仪表功能 安全完整性等级评估 风险控制 

分 类 号：X937[环境科学与工程—安全科学]