Underwater Laser Welding by 4kW CW YAG Laser

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概要

• 論文の詳細を見る

• In May 2000 JSME issued Rules on fitness-for-service for nuclear power plants, which define allowable flaw sizes at operating nuclear power plants, and based on evaluation against these rules, rational repairs were to be realized. According to results, rational in-situ repairs were urgently needed on aged nuclear power plants, and since underwater laser repairs met utilities requirements, the authors developed underwater YAG laser repair technology. Hitachi installed the equipment at JAPEIC (Japan Power Engineering and Inspection Corporation) in 1998 and implemented 0.3MPa underwater YAG laser welding in both downward and horizontal direction repairs, even in a U groove work piece. Metallurgical studies are ongoing.

• 社団法人 日本原子力学会の論文
• 2001-10-25

著者

• Kawano Toru

  Mechatronics Products Division Daihen Corporation

• YAMASHITA Yoshihiro

  Nuclear Plant Service Engineering Department, Hitachi, Ltd.

• MANN Kurt

  HAAS-Laser GmbH

• Yamashita Yoshihiro

  Nuclear Plant Service Engineering Department Hitachi Ltd.

• Mann Kurt

  HAAS-LASER

関連論文

• Underwater Laser Welding by 4kW CW YAG Laser
• Hith Power Nd : YAG Lasers (フォーラム「どこまで進むか : レーザの高出力化と加工応用」)
• Newly Undertaken Inspections and Repairs for Aged Nuclear Power Generators
• Full-Field Inspection Using Pulsed Laser for Nuclear Plants : Demonstrated by Ultrasonic Simulation Using Finite Difference Method
• Newly Developed Repairs on Welded Area of LWR Stainless Steel by Friction Surfacing

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