第2回
レーザを応用した炉内保全技術とそのPWRへの適用
著者:
佐伯 綾一,Ryoichi SAEKI,佐野 雄二,Yuji SANO,黒田 英彦,Hidehiko KURODA,落合 誠,Makoto OCHIAI,田村 雅貴,Masataka TAMURA,河野 渉,Wataru KONO
発刊日:
公開日:
キーワードタグ:
Toshiba has developed laser-based maintenance, inspection and repair technologies as countermeasures against stress corrosion cracking (SCC) in nuclear power reactors. Laser peening (LP) is a novel process for preventive maintenance, which improves residual stress from tensile to compressive on material surface by irradiation laser pulses in water. Laser-ultrasonic testing (LUT) is capable of detecting and sizing SCC having a depth of about 0.5 mm. Underwater laser welding can be fulfilled by making local ...
英字タイトル:
Laser based maintenance technologies for PWR power plants
第7回
水中レーザによるテンパービード溶接技術の開発
著者:
福田 健,Takeshi FUKUDA,頓宮 雄一,Masataka TAMURA,依田 正樹,Yuichi TONGU,森島 康雄,Wataru KONO,田村 雅貴,Masaki YODA,河野 渉,Minoru OBATA,小畑 稔,Yasuo MORISHIMA
発刊日:
公開日:
キーワードタグ:
Toshiba has developed temper bead welding by under water laser welding as SCC counter measure for aged components in PWR and BWR nuclear power plants. Temper bead welding by under water laser welding technique recovers toughness of low alloy steel reactor vessel by employing proper the number of cladding layers and their welding conditions. In th is report, some evaluation results of material characteristics of temper bead welded low alloy steel are presented....
英字タイトル:
Development of temper bead welding by under water laser welding
第3回
水中レーザ溶接技術の開発 -当て板補修工法-
著者:
田村 雅貴,Masataka TAMURA,松永 圭司,Keiji MATSUNAGA,牧野 吉延,Yoshinobu MAKINO
発刊日:
公開日:
キーワードタグ:
Recently, stress corrosion cracking (SCC) has been observed at aged components of nuclear power plants under water environment and high exposure of radiation. Toshiba has been developing both an underwater laser welding directly onto surface of the aged components and underwater laser p atch welding as repair techniques. This paper reports underwater laser patch welding technique....
英字タイトル:
Development of Underwater Laser Patch Welding Technique
第8回
水中レーザ溶接装置の開発
著者:
徳永 泰明,Yasuaki TOKUNAGA,千田 格,Itaru CHIDA,椎原 克典,Katsunori SHIIHARA,田村 雅貴,Masataka TAMURA,福田 健,Takeshi FUKUDA,前原 剛,Takeshi MAEHARA,依田 正樹,Masaki YODA
発刊日:
公開日:
キーワードタグ:
Toshiba has developed various laser-based maintenance and repair technologies and already applied to nuclear power plants. Laser beam welding technology has been developed as an SCC cou ntermeasure for aged components in PWRs and BWRs. This technology can also be used underwater by blowing shielding gas for creating a local dry area. This welding equipment has damage d etecting function of optical elements such as windows and optical fiber cables, and the laser beam spot position and diameter can be adjust...
英字タイトル:
Development of Underwater Laser Beam Welding Equipment