LBB和BP在核电厂高能管道上应用的差异性研究  

Study on Differences of LBB and BP Concepts Applied to High Energy Pipe of Nuclear Power Plant

作　　者：房永刚[1] 王庆[1] 苏岩[1] 徐宇[1] 

机构地区：[1]环境保护部核与辐射安全中心,北京100082

出　　处：《核安全》2017年第4期61-65,共5页Nuclear Safety

基　　金：大型先进压水堆重大专项项目;项目编号:2010ZX06002-10-09

摘　　要：在核电厂的管道设计中,普遍考虑了管道破裂及其产生的动态效应和环境效应,并将主管道和主蒸汽管道的双端剪切断裂作为核电厂的设计基准事故。然而,根据核电厂的长期运行经验反馈,发生双端剪切断裂的概率极低。通过不断的发展,核电设计者逐渐形成了一系列的理论,用以排除管道破裂的相关假设和防护措施,其中主要包括LBB和BP概念。本文进行了LBB和BP概念理论基础的相关研究,通过二者在第三代AP1000和EPR机组上应用的对比分析,总结了二者的差异,并给出了进一步提高LBB和BP应用的安全性的建议。The assumption of high energy pipe break and its associated dynamic and environment effect are considered in the design of the nuclear power plant, and the double - ended guillotine break of the re-actor coolant pipe and the main steam pipe is taken as the design basis accident However, according to the experience of long - term operation, the probability of double - ended guillotine break is extremely low. Through continuous development, nuclear designers have gradually formed a series of theories to ex-clude the relevant assumptions and protective measures, which include LBB and BP concepts. In this pa-per, LBB and BP theoretical basis are studied, and through comparison of their applications on API000 and EPR units, it concludes the similarities and differences between the two concepts, and gives safety suggestion on further application of LBB and BP.

关 键 词：管道破裂 动态效应 双端剪切断裂 设计基准事故 

分 类 号：TL341[核科学技术—核技术及应用]