某三代核电厂电气厂房外侧至常规岛主蒸汽及主给水管道断裂防护设计研究

Maim Steam and Main Feed Water Piping Between Electric Building Outside and CI Break Protection Design Study in some Advanced Nuclear Power Plant

为提高核电厂的经济性,拟取消电气厂房外侧至常规岛第一跨防甩击件,开展本课题研究。首先开展防护目标研究,确定了防护目标;其次,采用LS-DYNA动态模拟分析法进行了甩击效应研究;最后采用对比分析法进行了喷射效应研究。根据研究结果,甩击效应及喷射效应对防护目标的破坏不会影响核安全,可取消相应消防甩击件。本研究成果已应用于实际工程,具有良好的经济和社会效益。

In order to improve the economy of advanced nuclear power plant and cancel the pipe whip restraint between electric building outside and CI first bay,carry out this subject study.Firstly study and confirm the projection target.Secondly,the LS-DYNA dynamic simulation method is used to study the whip effect.Finally,the comparative analysis method is used to study the jet impingement effect.According to the results of the study,the impact of the pipe whip effect and the jet impingement effect on the protection target will not affect the nuclear safety.The research results have been applied to practical engineering and have good economic and social benefits.