METHOD OF REPAIRING BOTTOM SECTION OF NUCLEAR REACTOR,申请号EP20090817908-传众专利搜索

METHOD OF REPAIRING BOTTOM SECTION OF NUCLEAR REACTOR

申请公布号：EP2343711(A1)

申请号：EP20090817908

申请日期：2009.10.02

申请公布日期：2011.07.13

申请人：

KABUSHIKI KAISHA TOSHIBA

发明人：HAMAMOTO, YOSHIO;MOTORA, YUUICHI;KATO, HIROMI;TAKEUCHI, MASAHIRO;TAMURA, MASATAKA;OKADA, SATOSHI;KOBAYASHI, TAIJI;YODA, MASAKI;MIYASAKA, HIROYUKI;KONO, WATARU;ABURA, MASAKAZU

分类号：G21C19/02;B23K9/00;B23K26/14;B23K26/20;B23K26/32;B23K26/34;B23K31/00;G21C13/036;G21C17/003;G21C17/01;G21C17/017;G21C19/20

主分类号：G21C19/02

摘要：<p>A heating laser beam is emitted to a cracked portion to remove moisture from the cracked portion, and subsequently, a welding laser beam is emitted to the cracked portion to heat and melt the cracked portion. The heating laser beam and the welding laser beam are emitted to an entire surface of the cylindrical body inside the reactor such as a stub tube penetrating through and fixed to a reactor bottom portion and a crack of the welded portion between the cylindrical body and the reactor bottom portion to thereby prevent a new crack from occurring and reactor water from leaking.</p>