LOPA在化工装置SIL定级中的应用  

Application Introduction of LOPA in SIL Determination of Chemical Plant

作　　者：洪梅 张欣 刘俭 刘翠凤 Hong Mei;Zhang Xin;Liu Jian;Liu Cuifeng(Huanqiu(Xinjiang)Company,Xinjiang Uygur Autonomous Region,Karamay,833699,China;Dushanzi Petrochemical Information Network Company,Xinjiang Uygur Autonomous Region,Karamay,833699,China)

机构地区：[1]新疆寰球工程公司,新疆维吾尔自治区克拉玛依833699 [2]独山子石化信息网络公司,新疆维吾尔自治区克拉玛依833699

出　　处：《仪器仪表用户》2023年第5期34-37,共4页Instrumentation

摘　　要：在保证化工生产安全方面,SIL评估是一个很重要的环节。安全完整性等级(SIL)是一个广泛应用的评估安全仪表功能(SIF)的性能指标。保护层分析(LOPA)作为SIL定级中最常用的一种方法,它根据装置生产工艺流程,针对单个风险进行分析,分析风险的保护措施,进行计算,根据结果确定SIL等级。LOPA是一种半定量的评估方法,综合考虑保护层、可接受风险概率和初始事件(IE)概率等多个因素,通过计算量化确定SIL等级。本文简要介绍LOPA评估的基本程序,并以一个简单示例具体说明LOPA的每一个步骤和计算,以供参考。SIL assessment is an important step in guaranteeing chemical production safety.Safety Integrity Level(SIL)is a extensively used performance index of assessing Safety Instrumented Function(SIF).Layer of Protection Analysis(LOPA),as a most commonly used method of SIL determination;aims to a specific risk and analyzes all protective measures,then determines the SIL by the calculating result according to the plant process.LOPA is a semi-quantitative assessment of risk by taking some factors into consideration such as protective measures,acceptable risk probability and probability of Initial Event(IE),and determining the SIL based on the results of calculation.The article introduces the basic steps of SIL determination and explains every calculation specifically by taking an example,in order to give a reference.

关 键 词：安全完整性等级 安全仪表功能 SIL定级 

分 类 号：TH861[机械工程—仪器科学与技术]