圧力容器の照射脆化予測における Mn 成分の影響
英字タイトル:
Influence of Mn Concentration on the Prediction of Irradiation Embrittlement of RPV
著者:
木村 晃彦 Akihiko KIMURA 藪内 聖皓 Kiyohiro YABUUCHI 笠田 竜太 Ryuta KASADA
発刊日:
公開日:
Acceleration of irradiation embrittlementLifetime extensionReactor pressure vessel
Influence of Mn Concentration on the Prediction of Irradiation Embrittlement of RPV
著者:
木村 晃彦 Akihiko KIMURA 藪内 聖皓 Kiyohiro YABUUCHI 笠田 竜太 Ryuta KASADA
発刊日:
公開日:
カテゴリ: 第3回
キーワードタグ:Acceleration of irradiation embrittlementLifetime extensionReactor pressure vessel
概要
For extension of lifetime of light water reactors, it is essential to estimate irradiation embrittlement of reactor pressure vessel steels (RPVS) more precisely. In the c urrent estimation method, manganese is not considered to be the important element causing embrittlement. However, recently, it was observed that manganese remarkably enha nced neutron irradiation hardening of iron alloys at a neutron fluence higher than 3 x 10^n/mthat corresponds to more than 30 years operation of reactors. In this study, the roles of manganese in the acceleration of irradiation hardening will be discussed, and the influence of the manganese on the prediction of lifetime of RPVS is shown.
