安全仪表系统SIL定级及LOPA的应用研究  

SIL Grading of Safety Instrumented System and Study of LOPA Application

作　　者：邓锐[1] 刘美佳 平洋[1] 付勃昌 杜刚[1] Deng Rui;Liu Meijia;Ping Yang;Fu Bochang;Du Gang(Offshore Oil Engineer Co.Ltd.,Tianjin,00451,China;CNOOC(China)Co.Ltd.,Tianjin Branch,Tianjin,300452,China)

机构地区：[1]海洋石油工程股份有限公司,天津300451 [2]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《石油化工自动化》2023年第1期57-60,共4页Automation in Petro-chemical Industry

摘　　要：安全仪表功能(SIF)的安全完整性等级(SIL)定级是安全仪表系统(SIS)设计的基础,在IEC 61511中定义了SIL定级的多种方法。对比分析了SIL定级应用较多的方法,如安全层矩阵法、修正风险图表法以及保护层分析法(LOPA),总结出LOPA分析方法的优点,并结合海上某采油平台上典型SIF回路的SIL定级过程介绍了保护层分析法(LOPA)的实际工程应用。SIL grading of safety instrumented function(SIF) is the design basis of the safety instrumented system. Variety SIL grading methods are clearly defined in IEC 61511. The most often used methods, such as the safety layer matrix, modified risk graph and layer of protection analysis(LOPA) are compared and analyzed. The advantages of LOPA are summarized. Combined with the SIL grading of typical SIF loop on one offshore oil production platform, the practical engineering application of LOPA is introduced.

关 键 词：安全仪表系统 安全完整性等级 安全层矩阵 修正风险图 保护层分析法 

分 类 号：TQ086[化学工程]