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論文
原子力発電所の安全規制と設備利用率に関する2つの事例研究
著者:
菅谷 淳子,Junko SUGAYA,伊藤 邦雄,Kunio ITOH
発刊日:
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キーワードタグ:
This study focuses on the nuclear power plant capacity factor and safety regulation in two cases; first, long-term trend of capacity factor and evolution of safety regulation in the U. S as well as comparison with Japanese regulation, second, short-term fluctuation of capacity factor and the regulatory actions in late 1990’s in the U. S., to find regulatory impact on capacity factor. Some factors requisite for effective regulation are identified from these case studies....
英字タイトル:
Case Study of Regulatory Impact on Nuclear Power Plant Capacity Factor
論文
貯水容器及び配管に穴があいても漏れない漏洩防止テーピングの開発
著者:
長屋 幸助,Kosuke NAGAYA,關口 隆弘,Takahiro SEKIGUCHI,陳 志超,Zhichao CHEN,村上 岩範,Iwanori MURAKAMI
発刊日:
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キーワードタグ:
A new type taping for a water storage vessel or piping is presented, in which water leakage is isolated automatically by its self-repairing mechanism against holes. The self-repairing unit (sealant layer) is consisting of three pieces of net with lattices inside. Polymer particles, which expand their volume with water, is used for having self-repairing forces. In ordinary tapes, water leaks along the boundary between the tape and the vessel. In order to retain the leak isolation force, this article fi...
英字タイトル:
Leak Isolation Self-Repairing Tape for a Water Storage Vessel and Piping Against Holes
論文
運用・保守段階での機能向上を考慮したプラント保全モデルの基礎的検討
著者:
妻屋 彰,Akira TSUMAYA,井上 和也,Kazuya INOUE,望月 正人,Masahito MOCHIZUKI,若松 栄史,Hidefumi WAKAMATSU,荒井 栄司,Eiji ARAI
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キーワードタグ:
This paper proposes a maintenance activity model that considers not only routine maintenance activity but also functional maintenance including improvement/modification. Required maintenance types are categorized, and limitation of Activity Domain Integration Diagram (ADID) proposed by ISO18435 are discussed based on framework for life cycle maintenance management of manufacturing assets. Then, we proposed extension ADID model for plant maintenance activity model considering functional improvement/mo...
英字タイトル:
Basic study of the plant maintenance model considering plant improvement/modification
論文
ＰＷＲ加圧器管台異種金属溶接部ＵＴ検査手法の実証試験
著者:
笹原 利彦,Toshihiko Sasahara,直本 保,Tamotsu Jikimoto
発刊日:
公開日:
キーワードタグ:
Validation of ultrasonic testing (UT) for detecting stress corrosion cracks (SCCs) in the Pressurizer's dissimilar metal weld of nuclear power plant, PWR, was carried out. Appropriate UT methods using probes consist of separate transmit and receive piezo-electric elements with longitudinal wave can detect both axial and circumferential SCCs ranged from 12% to 23% thickness of weld. ...
英字タイトル:
Validation of Ultrasonic Testing for PWR Pressurizer Dissimilar Metal Weld
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