摘要
在使用保护层分析方法进行SIL定级过程中,使能条件及修正因子是影响定级结果的关键性分析因素之一,分析过程中应结合分析场景及后果的具体情况,正确使用使能条件及修正因子,以提高分析结果的准确性。本文给出了LOPA分析过程中常用的使能条件与修正因子并给出具体应用案例。
Enabling conditions and Conditional Modifiers are one of the key factors in SIL determination using layer of protection analysis method. The process of analysis should be combined with the analysis of scenarios and consequences, enabling conditions and Conditional Modi?ers should be used correctly in order to improve the accuracy of SIL determination results. In this paper, the enabling conditions and conditional modi?ers commonly used in the LOPA analysis process and speci?c application cases are given.
引文
[1]中国机械工业联合会.GB/T 32857-2016保护层分析(LOPA)应用指南[S].北京:中国标准出版社,2017
[2]国家安全生产监督管理总局.GB/T 21109-2007过程工业领域安全仪表系统的功能和安全[S].北京:中国标准出版社,2007
[3]保护层分析:使能条件与修正因子导则[Guidelines for Enabling Conditions and Conditional Modifiers in Layer of Protection Analysis][美]化工过程安全中心(CCPS)著,鲁毅,冯双虎,孔令仪等译