发明名称 |
METHOD FOR REPAIRING HEAT RECOVERY STREAM GENERATOR TUBE-TO-HEADER DAMAGE |
摘要 |
<p>A method for repairing a heat recovery steam generator (HSRG) header to tube attachment damage, includes providing an access window in the header opposite the damaged header to tube attachment location; removing the header to tube attachment damage; inserting a tapered stub tube into a header penetration centered axially immediately over the tube; effecting a profile weld between the header and the tapered stub tube at the header penetration from the inside surface of the header; welding the tapered stub tube to the existing tube through the header inside diameter; welding shut the access window; and completing a post weld heat treatment of all the welds.</p> |
申请公布号 |
EP1893383(A2) |
申请公布日期 |
2008.03.05 |
申请号 |
EP20060736287 |
申请日期 |
2006.02.28 |
申请人 |
ELECTRIC POWER RESEARCH INSTITUTE, INC |
发明人 |
GANDY, DAVID, WAYNE;FREDERICK, GREG;COLEMAN, KENT |
分类号 |
B23H9/10;B23K9/028;B23K9/167;B23K37/02;B23P6/00 |
主分类号 |
B23H9/10 |
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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