公开(公告)号：US11984233B2

公开(公告)日：2024-05-14

申请号：US17259691

申请日：2019-07-03

申请人： KOREA HYDRO & NUCLEAR POWER CO., LTD.

发明人： Seok-Ju Hwang ,  Young Hwan Hwang ,  Hang-Rae Cho ,  Cheon-Woo Kim

IPC分类号： G21D1/00 ,  G21F9/00

CPC分类号： G21D1/003 ,  G21F9/008

摘要： A method for decommissioning a heavy water reactor facility includes: removing the plurality of guide tubes from a plurality of through-holes; installing a plurality of shielding stoppers in the plurality of through-holes; removing the shielding stopper installed in one through-hole of the plurality of through-holes, and inserting a cutting device into a lower portion of the reactivity mechanism deck through the one through-hole to cut a connection portion between the reactivity mechanism deck and the calandria vault by using the cutting device; and separating the reactivity mechanism deck from the calandria vault.