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JP2005207983A Repairing method for instrumentation tube of jet pump differential pressure, and its system 有权
标题翻译：喷射泵差压检测仪及其系统的维修方法
公开(公告)号：JP2005207983A
公开(公告)日：2005-08-04
申请号：JP2004016912
申请日：2004-01-26
申请人： Bab-Hitachi Industrial Co , Hestec Service Co Ltd , Hitachi Ltd , バブ日立工業株式会社 , 株式会社ヘステックサービス , 株式会社日立製作所
发明人： YOSHIE YUTAKA , NISHINO MASAYUKI , NAGASHIMA TOSHIJI , IKEDA HIROSHIGE , FURUKAWA NOBUO , SUGANO SATOSHI , OTAKA MINORU
IPC分类号： G21C15/25 , G21C15/243 , G21C19/02
CPC分类号： Y02E30/31
摘要： PROBLEM TO BE SOLVED: To provide a method and system capable of efficiently repairing in a short time, when a work of repairing instrumentation tube of jet pump has incurred during service period.
SOLUTION: In-reactor equipment are removed, centers of broken instrumentation tubes are tentatively aligned, the breakage cross sections are held at nearly aligned positions by the tentative matching, tube outer surface is polished, and the breakage positions are tentatively welded (S101 to 104), by introducing a tentative welder in the reactor. When tentative welding is completed, the tentative welder is taken out of the reactor for total seal welding of the tentatively finished instrumentation tube, and a seal welder is introduced in the reactor and attached to the tentatively welded instrumentation tube. Well water is drained and seal welding of the instrumentation tube is conducted (S105 to 107), by operating the seal welder in pneumatic environment. Then, the pressure vessel is filled with water, the seal welder is taken out, and in-reactor components are recovered (S108 to 110) for finishing the work.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种能够在短时间内有效修复的方法和系统，当在使用期间发生喷射泵的仪表管的修理工作时。解决方案：拆除反应堆内的设备，将试样管的中心暂时排列，通过临时匹配将断裂截面保持在几乎对准的位置，管外表面进行抛光，并将断裂位置暂时焊接（ S101至104），通过在反应堆中引入临时焊工。暂时焊接完成后，临时焊机从反应堆中取出，用于临时成品仪表管的全密封焊接，并将密封焊机引入反应堆并附着在临时焊接的仪表管上。通过在气动环境中操作密封焊机，排水井和仪表管的密封焊接（S105〜107）。然后，用水填充压力容器，取出密封焊接机，回收反应器内部件（S108〜110），完成工作。版权所有（C）2005，JPO＆NCIPI

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