发明名称 |
PIPE BASE REPAIR METHOD AND NUCLEAR REACTOR VESSEL |
摘要 |
A nozzle repair method and a nuclear reactor vessel include: removing a trepanning portion (208) as a connection portion with respect to an in-core instrumentation cylinder (204) in a groove-welding portion (206); removing the in-core instrumentation cylinder (204) from a lower end plate (66); forming a plug attachment opening (211) by removing the groove-welding portion (206); applying a pressing load to the lower end plate (66) by attaching a plug (212) to the plug attachment opening (211); and welding and fixing the plug (212) attached to the plug attachment opening (211). Accordingly, since a repair is easily performed, it is possible to improve the workability and to decrease a repair cost. |
申请公布号 |
EP2940693(A1) |
申请公布日期 |
2015.11.04 |
申请号 |
EP20130866595 |
申请日期 |
2013.12.24 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
NISHIMURA, TSUYOSHI;YAMAMOTO, TAKESHI;SAKASHITA, HIDESHI;SATO, TOMONOBU;YAMAMOTO, AKIO |
分类号 |
G21C19/02;G21C1/08;G21C13/00;G21C13/036;G21C13/06;G21C17/003;G21C17/017;G21C17/10;G21C19/20 |
主分类号 |
G21C19/02 |
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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