超音波ショットピーニングのＢＷＲ炉内構造物への適用に向けた取り組み
英字タイトル:
Application of Ultrasonic Shot Peening for Internals of Boiled Water ReactorPower Plants
著者:
亀山 育子 Ikuko KAMEYAMA 大坪 徹 Toru OHTSUBO 須藤 和雄 Kazuo SUDO 桝田 祐貴 Yuuki MASUDA 山本 智 Satoshi YAMAMOTO
発刊日:
公開日:
internals replacementresidual stressSCCstress improvementUSP
Application of Ultrasonic Shot Peening for Internals of Boiled Water ReactorPower Plants
著者:
亀山 育子 Ikuko KAMEYAMA 大坪 徹 Toru OHTSUBO 須藤 和雄 Kazuo SUDO 桝田 祐貴 Yuuki MASUDA 山本 智 Satoshi YAMAMOTO
発刊日:
公開日:
カテゴリ: 第7回
キーワードタグ:internals replacementresidual stressSCCstress improvementUSP
概要
Toshiba have developed a method of reactor internals replacement and also applied some of methods to improve the residual stress for internals that can't be replaced easily. Ultrasonic shot peening (USP) is a stress improvement method that improves the surface residual stress of heat affected zone by using the vibration of Ultrasonic wave. As th e system of USP is simpler and more compact than the other methods, USP is applicable to welds on the bottom of reactor vessel during reactor internals replacement. In this p aper, the efficiency of USP is verified as a stress improvement method and also usefulness is shown by the simulated results of the process of reactor internals replacement.
