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論文
PWRプラントの高経年対策における環境疲労評価
著者:
中村 隆夫,Takao NAKAMURA,三山 彰一,Shoichi MIYAMA
発刊日:
公開日:
キーワードタグ:
Numbers of nuclear power plants have been operating for more than 30 years and some of them exceeding 40 years in Japan. In these ageing plants, fatigue evaluation has a significant measure in assuring the plant reliability. The environmental fatigue in light water reactors, which was first recognized in the 1980's in Japan, has been drawing attention worldwide because it may cause remarkable effects on the life of important components. The Japanese nuclear industries developed the world's first pract...
英字タイトル:
Environmental Fatigue Evaluation in PLM Activities of PWR plant
論文
オーステナイト系ステンレス鋼の塑性変形による微視的残留応力
著者:
鈴木 賢治,Kenji SUZUKI,菖蒲 敬久,Takahisa SHOBU
発刊日:
公開日:
キーワードタグ:
Austenitic stainless steel (SUS316L) was used as material of the specimen. Tensile deformation was applied to the plate specimen, the range of plastic strains was from 0% to 55%. The Vickers hardness of the specimens corresponded to the plastic strain. The residual macrostress was measured by Mn-Kα radiations. The residual macrostress of the annealed specimen had a small compression and changed into a tension after tensile plastic deformation. The specimen with 1% plastic strain showed the maximum ten...
英字タイトル:
Residual Microstress of Austenitic Stainless Steel by Plastic Deformation
論文
確率論的安全評価を用いた原子力プラントの長期運転における保全計画評価手法の構築
著者:
白石 夏樹,Natsuki SHIRAISHI,高橋 信,Makoto TAKAHASHI,橋爪 秀利,Hidetoshi HASHIZUME,若林 利男,Toshio WAKABAYASHI,宮田 浩一,Kohichi MIYATA,佐藤 親宏,Chikahiro SATO
発刊日:
公開日:
キーワードタグ:
The evaluation method for maintenance optimization in long-term operation of nuclear power plant (NPP) has been proposed by using Probabilistic Safety Assessment (PSA) in general. Possible troubles in the maintenance activities of NPP are modeled and simulated by using Fault Tree with failure rates of components estimated by operating experiences in Japan. The Monte-Carlo simulation has been performed to compare the maintenance strategies such as cycle extension of periodic inspection and overhaul for...
英字タイトル:
Development of an Evaluation Method for Maintenance Optimization in Long-term Operation of Nuclear Power Plant with Probabilistic Safety Assessment