軽水炉圧力容器寿命評価におけるマンガン影響
英字タイトル:
Influences of Mn on the Estimation of Lifetime of Reactor Pressure Vessel
著者:
木村 晃彦 Akihiko KIMURA
発刊日:
公開日:
Acceleration of irradiation embrittlementLifetime extensionReactor pressure vessel
Influences of Mn on the Estimation of Lifetime of Reactor Pressure Vessel
著者:
木村 晃彦 Akihiko KIMURA
発刊日:
公開日:
カテゴリ: 第2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 cur rent estimation method, manganese is not considered to be the important element causing embrittlement. However, recently, it was observed that manganese remarkably enhanced neutron irradiation embrittlement of iron alloys at a neutron fluence higher than 3 x 102n/m? that corresponds to more than 30 years operation of reactors. In this study, t he roles of manganese in the acceleration of irradiation embrittlement will be discussed, and the influence of the manganese on the estimation of lifetime of RPVS is shown.
