| 蒋冬梅,杜颖,袁小兰.LBB在AP1000技术中的应用[J].南华大学学报(自然科学版),2015,29(4):7~11.[JIANG Dong-mei,DU Ying,YUAN Xiao-lan.The Application of LBB in AP1000 Technology[J].Journal of University of South China(Science and Technology),2015,29(4):7~11.] |
| LBB在AP1000技术中的应用 |
| The Application of LBB in AP1000 Technology |
| 投稿时间：2015-05-14 |
| DOI： |
| 中文关键词: 压水堆核电厂 AP1000 LBB 双端断裂 反应堆冷却剂管道 主蒸汽管道 |
| 英文关键词:PWR nuclear power plant AP1000 LBB double-end fracture reactor coolant pipe main steam line |
| 基金项目:湖南省自然科学基金与衡阳市联合基金重点基金资助项目(14JJ5019) |
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| 中文摘要: |
| 压水堆核电厂的设计基准事故定义为主管道双端断裂,这一假设过于保守.管道的失效方式往往是先出现破口而后再泄漏,即所谓的先漏后破(Leak Before Break,简称LBB),而不是双端断裂.LBB准则是防止核电厂压力管道发生灾难性破裂事故的重要评定准则.本文介绍了LBB评定技术在国外的发展情况和意义,阐述了LBB在AP1000核电厂中的应用情况及LBB评价的理论基础. |
| 英文摘要: |
| Design basis accident of pressurized water reactor nuclear power plant was defined as main pipeline double-end fracture,this assumption is too conservative.Pipeline failure modes often appear as first Break then Leak,that is so-called the Leak Before Break (Leak Before Break,LBB),rather than double end fracture.LBB is an important evaluation criteria of preventing pressure piping catastrophic rupture accident of nuclear power plant.This paper briefly introduces the development situation and the significance of the overseas LBB assessment technology and expounds the application of LBB in AP1000 nuclear power plant and the theoretical basis of LBB assessment. |
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