Control element for fuel assembly of pressurized water nuclear reactor, has spinner with multiple spinning arms extending in radial direction, where spinning arms are provided with hollow cylindrical spinning nodes

摘要

The control element has a spinner (2) with multiple spinning arms (4) extending in a radial direction. The spinning arms are provided with hollow cylindrical spinning nodes (8). The spinning node extends in an axial direction. A control rod (6) is passed through the spinning node. The control rod is provided on an end with an outer thread. The end protrudes over the spinning arms. A screw nut (12) is fixed in end mounting position at spinning arms with intermediate pieces (20a,20b,20c) which is welded with the screw nut and the spinning arms.