南华大学学报（自然科学版）2015，Vol.29Issue(4)：7-11,5.
LBB在AP1000技术中的应用
The Application of LBB in AP1000 Technology
摘要
Abstract
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.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Key words
PWR nuclear power plant/AP1000/LBB/double-end fracture/reactor coolant pipe/main steam line分类
信息技术与安全科学引用本文复制引用
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):7-11,5.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) （14JJ5019）
