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.
Design basis accident of pressurized water reactor nuclear power plant was de- fined 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 evalua- tion criteria of preventing pressure piping catastrophic rupture accident of nuclear power plant. This paper briefly introduces the development situation and the significance of the o- verseas LBB assessment technology and expounds the application of LBB in AP1000 nucle- ar power plant and the theoretical basis of LBB assessment.
出处
《南华大学学报（自然科学版）》
2015年第4期7-11,共5页
Journal of University of South China：Science and Technology
基金
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)
