SIL验证在安全仪表系统评估中的应用  

Application of SIL Verification Technology in Safety Instrument System Assessment

作　　者：吴健宏[1] 毕晓星 刘冰[1] 任玉洁 WU Jian-hong;BI Xiao-xing;LIU Bing;REN Yu-jie(CNOOC Gas ＆ Power Group Co.,Ltd)

机构地区：[1]中海石油气电集团有限责任公司

出　　处：《化工自动化及仪表》2018年第6期452-457,共6页Control and Instruments in Chemical Industry

摘　　要：介绍安全仪表系统SIL验证的方法和步骤,探讨识别SIF回路组成的原则,对比IEC61508和IEC61511中关于结构约束的要求。介绍采用Markov模型进行SIF失效率计算的关键参数,以LNG接收站为例,讨论各参数对失效率的影响。针对Markov模型中影响较大的主要参数,提出安全仪表系统设计、施工和维护中的一些建议。The method and procedure of SIL verification tor saiety instrument system were discussed,including the principle to identiiy SIF composition and the structural constraint requirements in IEC61508 and IEC61511. Key parameters of making use of Markov model to calculate SIF failure rate were introduced. Through taking LNG terminal as an example,each parameter＇ s influence on the SIF failure rate was discussed and aiming at key parameters in Markov model, suggestions on SIS design, installation and maintenance were presented.

关 键 词：安全仪表系统 LNG接收站 SIL评估 SIL验证 MARKOV模型 

分 类 号：TH862.7[机械工程—仪器科学与技术]