基于GO法的输气站场可靠性分析  

Reliability analysis of gas transmission station based on GO methodology

作　　者：姚安林[1,2] 黄亮亮[1,3] 徐涛龙[1] 

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]油气消防四川省重点实验室,四川成都610500 [3]中国石油西气东输管道公司,上海200122

出　　处：《石油学报》2016年第5期688-694,共7页Acta Petrolei Sinica

基　　金：国家科技支撑计划项目(2011BAK06B01-11)资助

摘　　要：为有效提高天然气站场可靠性水平,识别系统的薄弱环节,基于GO法原理建立了输气站场可靠性分析方法。根据输气站场的基本工艺流程,将其划分为清管器接收子系统、过滤分离子系统、增压子系统、调压计量子系统、放空子系统、排污子系统和清管器发送子系统7个区块。根据子系统的工艺流程建立了GO图模型,通过GO法计算公式进行可靠性定量分析并确定组成部件的故障重要度,通过实际案例,将GO法与故障树分析法的计算结果进行对比。结果表明:相对于故障树分析法,GO法能够充分表征输气站场中存在的关于停工、维修和备用等故障的复杂相关性,建模过程简单、逻辑清晰,且分析结果更加符合工程实际;分析案例中增压子系统的平均失效概率为2.2180×10^(-5),其中的空冷器、汇管以及埋地工艺管道的故障重要度较高,应作为站场安全管理的重点关注对象。To effectively improve the reliability level of natural gas transmission station and identify weak segments in system, a reliabilityanalysis method has been established based on GO methodology. According to the basic technological processes, a gas transmissionstation is divided into seven blocks, i. e. , pig receiving subsystem, filtering separation subsystem, pressurizing subsystem,regulating-metering subsystem, releasing subsystem, pollution discharge subsystem and pig sending subsystem. Meanwhile, GOchart model has been established based on the process flows of subsystems. The calculation formulas of GO methodology are used toquantitatively analyze the reliability and determine the fault importance of components. Based on a practical case, a comparative analysisis performed on the calculating results of GO methodology and Fault Tree Analysis methodology. The results demonstrate thatcompared with the Fault Tree Analysis, GO methodology is able to fully characterize the complex correlations with malfunction, maintenance,reserve and etc. in gas transmission station. The modeling process is simple with clear logic, and the analysis result is moreconsistent with the engineering practice. In the analysis case, the average failure probability of pressurizing subsystem is 2. 218 0 × 10-5.The emphasis should be put on air cooler, header and buried process pipeline in station safety management owing to their high fauttimportance.

关 键 词：输气站场 可靠性分析 GO法 故障重要度 增压子系统 

分 类 号：TE88[石油与天然气工程—油气储运工程]