SIL验证技术中的PFD_(avg)计算及关键参数设定  

PFD_(avg) Calculation and Key Parameters Setting in SIL Verification Technology

作　　者：贾铁虎 范宗海 Jia Tiehu;Fan Zonghai(Sinopec Engineering Inc.,Beijing,100101,China)

机构地区：[1]中国石化工程建设有限公司,北京100101

出　　处：《石油化工自动化》2022年第1期46-48,57,共4页Automation in Petro-chemical Industry

摘　　要：介绍了安全仪表系统的组成,对安全仪表系统完成设计后,SIL验证中的操作模式,要求时危险失效平均概率(PFD_(AVG))计算所需任务时间、有效寿命,检验测试、检验测试间隔周期、检验测试覆盖率,PFD_(AVG)计算公式等关键参数进行了阐述说明。希望以此促进SIL验证的准确性和有效性,从而提高生产装置的安全性能。The composition of the safety instrumented system is introduced.After completing the design of safety instrumented system,the key parameters of operation mode of SIL verification,repuired mission time of PFD_(avg)calculation,useful lifetime,proof test,proof test interval,proof test coverage,PFD_(avg)calculation formula are expounded.It is hoped to improve the accuracy and effectiveness of SIL verification,so as to improve the safe performance of production installation.

关 键 词：安全仪表系统 安全完整性等级 要求时危险失效平均概率 操作模式 检验测试覆盖率 共因失效分数 

分 类 号：TQ086.2[化学工程]