Research on crack-opening displacement and leak rate prediction of the through-wall crack in LBB design

QIAO Hongwei LI Qi LIU Zhiwei LI Xihua

doi:10.11889/j.0253-3219.2013.hjs.36.040619

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Research on crack-opening displacement and leak rate prediction of the through-wall crack in LBB design

更新时间：2021-06-03

- Research on crack-opening displacement and leak rate prediction of the through-wall crack in LBB design
- NUCLEAR TECHNIQUES Vol. 36, Issue 4, Article number: 040619(2013)
- 作者机构：
  
  中国核动力研究设计院二所
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2013.hjs.36.040619
  CLC： TL353.11;O346.1
- Published：2013
- 稿件说明：
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[1]乔红威,李琦,刘志伟,李锡华.LBB设计中管道贯穿裂纹张开位移及泄漏率计算研究[J].核技术,2013,36(04):97-103.

QIAO Hongwei LI Qi LIU Zhiwei LI Xihua. Research on crack-opening displacement and leak rate prediction of the through-wall crack in LBB design[J]. Nuclear techniques, 2013, 36(4): 040619
[1]乔红威,李琦,刘志伟,李锡华.LBB设计中管道贯穿裂纹张开位移及泄漏率计算研究[J].核技术,2013,36(04):97-103. DOI： 10.11889/j.0253-3219.2013.hjs.36.040619.

QIAO Hongwei LI Qi LIU Zhiwei LI Xihua. Research on crack-opening displacement and leak rate prediction of the through-wall crack in LBB design[J]. Nuclear techniques, 2013, 36(4): 040619 DOI： 10.11889/j.0253-3219.2013.hjs.36.040619.

摘要

在核电站管道破前漏设计（LBB）过程中

需要对管道的关注部位假设一个贯穿裂纹

然后计算该裂纹在正常运行工况下的裂纹张开位移（COD）以及流体泄漏率

从而验证管道LBB设计准则的适应性。本文介绍了COD以及泄漏率计算的意义

然后探讨了各种计算方法的优缺点和发展方向

最后给出了自主开发程序的验证算例。文中讨论的问题可为LBB技术在我国核电厂中的应用提供参考。

Abstract

Background: During the process of Leak Before Break（LBB） design for the pipes in nuclear power plant

a through-wall crack is hypothesized in each selected location of the candidate pipe line

then the Crack-Opening Displacement（COD） and leak rate of the crack under normal operation condition is predicted

finally the applicability of the LBB design criterion is ascertained.Purpose: Discuss the disadvantages of the COD and leak rate calculation methodologies

develop a COD and leak rate calculation program.Methods: Through compare the results from the program developed by ourselves with PICEP

the program developed by ourselves is verified.Results: The results from the program developed by ourselves tally with PICEP.Conclusions: The disadvantages of each COD and leak rate methodologies are discussed;then a program was successfully developed.Both can provide some reference for the application of the LBB approach to the nuclear power stations of China.

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Related Institution

School of Mechanical Engineering, Shanghai Jiao Tong University

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