基于轨迹交叉论和LOPA的锅炉腐蚀失效风险评估方法及应用  

Method and Application for Risk Assessment in Corrosion Failure of Boiler Based on Trace Intersecting Theory & LOPA

作　　者：耿语晗 卿黎[1] 张胜跃 吉全霖 GENG Yuhan QING Li ZHANG Shengyue JI Quanlin(Faculty of Land Resource Engineering, Kunming University of Science and Technology,Kunming 650093, Chin)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《工业炉》2017年第3期27-31,共5页Industrial Furnace

基　　金：云南省教育厅科学研究基金重点资助(KKJD201521001);教育部博士点基金资助(KKQS201521001)

摘　　要：针对电站锅炉存在高温腐蚀的现象,从安全的角度将轨迹交叉理论与保护层分析法(Layers of Protection Analysis,LOPA)两种理论相联系,用于锅炉四管防腐阻垢风险评估中。利用轨迹交叉理论和保护层分析,分析评价系统中的危险因素。基于轨迹交叉理论将系统中的危险因素分为人-物两条事件链,通过保护层分析的基本程序和计算步骤,确定危险因素的风险级别,以考虑是否需要增添安全措施,以此增加系统的安全性。结果表明:将LOPA法应用于锅炉四管防腐风险分析中,不仅可以完善轨迹交叉理论的分析结果,而且可以更为精准地找出系统中风险较高的危险因素。"以人为本+LOPA分析+风险评估"可成为企业安全管理新模式。Aiming at the phenomenon of high temperature corrosion in power plant boiler, the track cross theory and protective layer analysis （the Layers of Protection Analysis, LOPA） are contacted from the angle of safety, and used in risk assessment to prevent corrosion and scale formation. Using the theory of trajectory cross and protective layer analysis, the risk factors in the evaluation system are analyzed. Based on the trajectory cross theory, the dangerous factors of the system will be divided into one-two events chain, through the basic application of protective layer analysis and calculation steps, determine the risk level, risk factors to consider whether add security measures, in order to increase the security of the system. The results show that the four LOPA method was applied to boiler tube corrosion risk analysis, can not only improve cross the theoretical analysis results, but also can more accurately find out the system risk in the high risk factors. With the person this combined with layers of protection analysis risk assessment can become the new safety management mode.

关 键 词：轨迹交叉理论 保护层分析 四管 防腐 安全措施 以人为本 

分 类 号：TM621.2[电气工程—电力系统及自动化]