Influence on off-center TWC on LBB applicability

LIANG Bingbing SHI Wang LI Gang

doi:10.11889/j.0253-3219.2013.hjs.36.040631

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Influence on off-center TWC on LBB applicability

更新时间：2021-06-03

- Influence on off-center TWC on LBB applicability
- NUCLEAR TECHNIQUES Vol. 36, Issue 4, Article number: 040631(2013)
- 作者机构：
  
  上海核工程研究设计院
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2013.hjs.36.040631
  CLC： TL353.11;O346.1
- Published：2013
- 稿件说明：
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[1]梁兵兵,石望,李岗.非中心穿透裂纹对LBB技术应用的影响分析[J].核技术,2013,36(04):162-166.

LIANG Bingbing SHI Wang LI Gang. Influence on off-center TWC on LBB applicability[J]. Nuclear techniques, 2013, 36(4): 040631
[1]梁兵兵,石望,李岗.非中心穿透裂纹对LBB技术应用的影响分析[J].核技术,2013,36(04):162-166. DOI： 10.11889/j.0253-3219.2013.hjs.36.040631.

LIANG Bingbing SHI Wang LI Gang. Influence on off-center TWC on LBB applicability[J]. Nuclear techniques, 2013, 36(4): 040631 DOI： 10.11889/j.0253-3219.2013.hjs.36.040631.

摘要

随着LBB技术的发展和应用推广

可运用详细的裂纹扩展分析技术

通过周密的分析论证

以证明带缺陷管系在使用寿期内同样能够满足SRP3.6.3中关于LBB技术应用的、与泄漏探测能力、裂纹稳定性和载荷相关的裕量要求。在这种前提下

一些额外的分析就必不可少。其中之一即为需要考虑载荷对称中心与裂纹对称中心不重合情况

即所谓的非中心裂纹

对LBB技术应用的影响。本文以压水堆核电厂中DN150、DN350和DN550管径的核1级高能管道中非中心裂纹为研究对象

先从偏心角度对裂纹张开面积的分析着手

进而研究其对泄漏率分析与裂纹稳定性分析的影响

并对非中心裂纹对LBB技术应用的影响做了综合性的分析总结

为今后含缺陷管道应用LBB技术的分析提供参考与借鉴。

Abstract

Background: With the development and wide application of LBB technology

LBB can be applied on the pipe with known defects through aborative crack propagation analysis and deterministic LBB analysis.Purpose: Under this circumstance

some additional analysis are needed besides the traditional procedures required by SRP 3.6.3 and NUREG 1061.Methods: One of them is the analysis of the influence of off-center TWC on pipe LBB applicability.Results: In this text

three types of NPP high energy piping

whose nominal diameter is 6in

14in and 22in respectively

are chosen to be analyzed for the research of off-center TWC on pipe LBB applicability.First

the influence on COA is analyzed.Then the influences both on leakage crack size and on the maximum crack stable loads are analyzed.Conclusions: And finally the conclusions which can aid the LBB application on pipe with defect are presented.

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Numerical simulation of steam bubble dynamics at microcrack in LBE descending flow field

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School of Mechanical Engineering, Shanghai Jiao Tong University

China Nuclear Power Technology Research Institute

The 2nd Sub-Institute of Nuclear Power Institute of China

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