公开(公告)号：EP0626699A1

公开(公告)日：1994-11-30

申请号：EP94303583.2

申请日：1994-05-19

申请人： GENERAL ELECTRIC COMPANY

发明人： Nopwaskey, Fred Charles ,  Whitling, Robert William ,  Kowdley, Balasubramanian Srikantiah ,  Ortega, Frank

IPC分类号： G21C19/10 ,  G21C19/06

CPC分类号： G21C19/10 ,  G21C19/06 ,  G21C19/207 ,  G21Y2002/302 ,  G21Y2002/40 ,  G21Y2002/501 ,  G21Y2004/40 ,  G21Y2004/50 ,  G21Y2004/501

摘要： A tool set and a method of using those tools in combination is disclosed that are especially well adapted to the function of rearranging and/or replacing the control rods and fuel supports in a boiling water reactor. The tool set includes a grapple (40) that is capable of simultaneously picking up both a control rod and its associated fuel support. A separate unlatching tool (90) is provided for pulling the control rod's release handle in order to decouple the control rod from a control rod drive. A storage rack (150) that may be mounted in the reactor pressure vessel is provided for storing a fuel support and a pair of control rods when the positions of selected control rods are being shifted about the reactor core area. In the method aspect of the invention, the unlatching tool (90) is used to pull the control rod's release handle. Thereafter, the grapple (40) lifts the control rod and its associated fuel support as a unit. When rearranging the positions of the control rods, a first control rod and its associated fuel support are placed in the storage rack (150). Then a second control rod/fuel support assembly is removed in a similar manner and the second control rod is placed in the storage rack (150). Thereafter, the first control rod may be removed from the storage rack (150) and placed in the position formally occupied by the second control rod, with the same fuel support that was removed from the second location.

摘要翻译： 公开了一种工具组和组合使用这些工具的方法，其特别适用于在沸水反应器中重新布置和/或更换控制棒和燃料支架的功能。 该工具组包括能够同时拾起控制杆及其相关联的燃料支架的抓斗（40）。 提供单独的解锁工具（90）用于拉动控制杆的释放手柄，以便将控制杆与控制杆驱动器分离。 当安装在反应堆压力容器中的存放架（150）被设置用于当所选择的控制杆的位置在反应堆堆芯区域周围移动时存储燃料支架和一对控制杆。 在本发明的方法方面，解锁工具（90）用于拉动控制杆的释放手柄。 此后，抓斗（40）作为一个单元提升控制杆及其相关联的燃料支架。 当重新排列控制杆的位置时，第一控制杆及其相关联的燃料支撑件被放置在存储架（150）中。 然后以类似的方式移除第二控制杆/燃料支撑组件，并且将第二控制杆放置在存储架（150）中。 此后，第一控制杆可以从存储架150被移除并且被放置在由第二控制杆正式占据的位置，具有从第二位置移除的相同的燃料支撑。