核电站蒸汽发生器传热管机械堵管工艺评定

Mechanical plugging procedure qualification of steam generator heat transfer tube in nuclear power plant

堵管是核电站蒸汽发生器传热管破损的主要维修方法。根据ASME B&PVC规范,介绍了核电站蒸汽发生器机械堵管工艺评定的相关要求,如水压试验、热态循环试验等,并举例介绍了具体的评定过程,供核电站蒸汽发生器堵管工具设计、制造及维修单位参考。

Plugging is the main maintenance method for steam generator tube breakage in nuclear power plant.This paper introduces related requirements of mechanical plugging procedure qualification of steam generator in nuclear power plant according to ASME B&PVC code,for example,hydraulic proof test,thermal transient cyclic test,etc.,and gives an example to introduce the specific qualification process in an view to provide a reference for the companies engaged in plugging tool design,manufacturing and maintenance of steam generators for nuclear power plant.