公开(公告)号：US20130195238A1

公开(公告)日：2013-08-01

申请号：US13753629

申请日：2013-01-30

申请人： Hitachi-GE Nuclear Energy, Ltd.

发明人： Shinya OHMORI ,  Koichi KUROSAWA ,  Masaaki TANAKA ,  Takanori SATOH

IPC分类号： G21C19/00

CPC分类号： G21C19/00 ,  G21C13/024 ,  G21C19/02 ,  G21C19/207 ,  G21Y2004/50

摘要： A shroud support of a BWR includes a shroud support cylinder, shroud support legs welded to a bottom of a reactor pressure vessel (RPV) and a shroud support cylinder, and an annular shroud support plate disposed between the RPV and the shroud support cylinder and welded to the RPV and the shroud support cylinder. A support apparatus is set a CRD housings installed to the bottom of the RPV. A rail guide member horizontally set to the support apparatus reaches directly below the shroud support plate through an opening between the shroud support legs. A bent rail is set on the rail guide member. The bent rail setting a repair device is pushed out along the rail guide member toward the RPV through the opening portion by the rail push-out apparatus set on the support apparatus. The bent rail is spread at directly below the shroud support plate.

摘要翻译： BWR的护罩支撑件包括护罩支撑筒，焊接到反应堆压力容器（RPV）的底部的护罩支撑腿和护罩支撑筒，以及设置在RPV和护罩支撑筒之间并被焊接的环形护罩支撑板 到RPV和护罩支撑筒。 设置支撑装置，安装在RPV底部的CRD外壳。 水平设置到支撑装置的导轨构件通过护罩支撑腿之间的开口直接到达护罩支撑板的正下方。 轨道导轨构件上设有弯轨。 设置修理装置的弯曲轨道通过设置在支撑装置上的轨道推出装置通过开口部沿导轨构件向RPV推出。 弯曲的轨道分布在护罩支撑板的正下方。