CONTROL ROD/CONTROL ROD DRIVE MECHANISM COUPLINGS

    公开(公告)号:EP3503120A1

    公开(公告)日:2019-06-26

    申请号:EP19154647.2

    申请日:2011-09-15

    摘要: A nuclear reactor includes a pressure vessel (10), and a control rod assembly including at least one movable control rod (18) comprising a neutron absorbing material, a control rod drive mechanism (CRDM) (14) for controlling movement of the at least one control rod, and a coupling operatively connecting the at least one control rod and the CRDM. The coupling includes a first portion comprising a first material having a first density at room temperature, and a second portion comprising a second material having a second density at room temperature that is greater than the first density. In some embodiments the coupling includes a connecting rod (30) including a hollow or partially hollow connecting rod tube (90) comprising a first material having a first density and a filler (92) disposed in the hollow or partially hollow connecting rod tube, the filler comprising a second material having a second density greater than the first density.