发明名称 |
Method of repairing housing of control rod driving system |
摘要 |
A method of repairing the housing of a control rod driving system of a nuclear reactor, the housing being inserted through the wall of a pressure vessel of the reactor into a cylindrical sleeve secured to the inner surface of the vessel, which housing is jointed by welding to the cylindrical sleeve. The method comprises the steps of: cutting the housing in the circumferential direction of the housing at a position defined between the weld joint and the inner surface of the reactor vessel and surrounded by the cylindrical sleeve, thereby to divide the housing into a first housing part still attaching to the weld joint and another removable housing part; removing the removable other housing part; inserting a second housing part into said cylindrical sleeve through the wall of the nuclear reactor vessel; and uniting the first housing part and the second housing part by welding thereby to form a new housing for the control rod driving system.
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申请公布号 |
US4440339(A) |
申请公布日期 |
1984.04.03 |
申请号 |
US19810272882 |
申请日期 |
1981.06.12 |
申请人 |
HITACHI, LTD. |
发明人 |
TAMAI, YASUMASA;KOYAMA, TAKAICHI |
分类号 |
G21C7/16;F16L41/00;G21C7/10;G21C13/036;(IPC1-7):B23K31/06 |
主分类号 |
G21C7/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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