152件が見つかりました。

並び替え
第7回
著者:
大畑 仁史,Hitoshi OHATA,室井 勇二,Yuji MUROI,小野瀬 鉄也,Tetsuya ONOSE
発刊日:
公開日:
キーワードタグ:
The Japan Atomic Power Company (JAPC) plans to increase rated reactor thermal power of Tokai No.2 Power Station (Tokai-2) by five percent. This paper describes preliminary evaluation results on the effects of five-percent power uprate in Tokai-2 upon its maintenance activities....
英字タイトル:
Preliminary Evaluation Results on the Effects of Power Uprate upon Maintenance Activities
第7回
著者:
星野 知彦,Tomohiko HOSHINO,竹内 公人,Kimihito TAKEUCHI
発刊日:
公開日:
キーワードタグ:
Tsuruga Unit 3&4 is the first APWR, which introduces a lot of impro ved technology aiming at safety, reliability and operability enhanc ement. This paper explains about our activities as to the reflecti on of our operation and maintenance experience including countermea sures against experienced troubles and plant life management evalua tion result of operating PWRs in Japan. And the preparation for mai ntenance program introduction and basic policy for training of fut ure operators and maintenance enginee...
英字タイトル:
The Reflection of Operation and Maintenance Experience to the FirstAdvanced PWR Design
第7回
著者:
樋口 裕思,Yuji HIGUCHI,木林 哲也,Tetsuya KIBAYASHI,白土 忠人,Tadahito SIRATO,重田 隆弘,Takahiro SHIGETA,石川 雅章,Masaaki ISHIKAWA,橋本 義和,Yishikazu HASHIMOTO,渡辺 剛史,Tsuyoshi WATANABE,平井 稔雄,Toshio HIRAI,安達 俊彰,Toshiaki ADACHI,桑原 元希,Motoki KUWAHARA,長沢 圭介,Keisuke NAGASAWA,綱崎 勝,Masaru TSUNASAKI,枇杷友 啓郎,Yoshirou BIWATOMO,古野 俊秋,Toshiaki FURUNO
発刊日:
公開日:
キーワードタグ:
The aim of this study is to research and evaluate new technologies i n the world from the point of view to improve the safety and securi ty of pipeline for gas distribution toward the next generation which can practice the productive maintenance and preventive maintenance....
英字タイトル:
Research and Evaluation of New Technologies to Improve the Maintenance of Pipeline for GasDistribution toward the Next Generation
第7回
著者:
村上 清敬,Murakami KIYOTAKA,森田 博之,Morita HIROYUKI
発刊日:
公開日:
キーワードタグ:
In a thermal power plant that has been operating for more than 30 years, approximately 1100 MBBs and ACBs are used. However, since the supply of substitution parts from the breaker manufacturer stopped in 2005 and maintenance has b ecome difficult, Chubu Electric has established an in-house maintenance technique through technical collaboration wi th its group company Chubu Plant Service Co., Ltd., in order for the company to be independent of the manufacturer....
英字タイトル:
Establishment of an In-House Technique for Maintaining Circuit BreakersUsed in Aging Power Plants
第7回
著者:
木村 隆一,Ryuichi KIMURA,近藤 恵太,Keita KONDO
発刊日:
公開日:
キーワードタグ:
In a ship's engine room, engineers are surrounded by various noises emitted from the diesel engine, generator, pumps, and other auxiliary machines. During inspections and activities in such environments, workers strive to listen for extraordinary noises issuing from machines and instruments, which might signal a need for maintenance work. I f that practice functions well, proper noise perception helps them perform maintenance work and achieve early detection of abnormalities that would otherwise contribut...
英字タイトル:
High noise effects on engineers' sound perception: improving listening capabilities in noisy environments.
第7回
著者:
安藤 柱,Kotoji ANDEO,高橋 宏治,Koji TAKAHASHI,北條 恵司,Keiji HOUJYOU,橋倉 靖明,Yasuaki HASHIKURA,水上 博嗣,Hiroshi MIZUKAMI,佐野 勇人,Hayato SANO
発刊日:
公開日:
キーワードタグ:
This study proposes an innovative method for arresting SCC, fatigue and hydrogen assisted cracks, and making harmless the cracks by overload. By overloading, compressive residual stress is introduced ahead of the crack. The residual stress reduce K values and arrest the crack. By theory, Kiscc, Kjhe and Kth increase with increasing Kov (K value by overload) and the nominal threshold values were given the equation: “Kuscc, NKjhe and NK th=C + D Kov. Where C is Kiscc, Kihe and Kth, respectively, and D is a p...
英字タイトル:
Arrest of SCC, Fatigue and Hydrogen Assisted Cracks, and Make Harmlessthe Cracks by Overload
第7回
著者:
中村 隆夫,Takao NAKAMURA,三山 彰一,Shoichi MIYAMAIURA
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 i n the 1980's in Japan, has been drawing attention worldwide because it may cause remarkable effects on the life of important components.. This paper int roduces a few examples of environmental fatigue evalu...
英字タイトル:
Environmental Fatigue Evaluation in PLM Activities of PWR plant
第7回
著者:
小林 雄樹,Yuki KOBAYASHI,高橋 哲郎,Teturo TAKAHASHI,篠崎 忠宏,Tadahiro SHINOZAKI,小笠原 甲士,Kouji OGASAWARA,小泉 健治,Kenji KOIZUMI,中島 靖雄,Yasuo NAKAZIMA
発刊日:
公開日:
キーワードタグ:
The negative pressure control valve is reliable apparatus which has been used in many nuclear facilities. In recent years, there are some troubles on those valves in CPF (Chemical Processing Facility) by the aged deterioration because the valves were kept using for more than 25 years after facility had operated. Therefore, we have been c arrying out renewal of driving units of the valves to assure performance of negative pressure control function and to keep stability of operation of the facility. In this...
英字タイトル:
Maintenance activities in Chemical Processing Facility 1. Renewal of driving unit of negative pressure control valves
第7回
著者:
倉田 勝,Masaru KURATA,水上 優,Masaru MIZUKAMI,西田 毅,Takeshi NISHITA,立壁 圭一郎,Keiichiroh TATEKABE
発刊日:
公開日:
キーワードタグ:
The lube oil leakage from indicator valves of Emergency Diesel Generator was found at Shika nuclear po wer plant Unit 2 in Dec. 2009. As a result of investigation, we found that temperature fall after shut down of diesel engine generate negative pressure in the combustion chamber, and the cooling oil for pi ston leak into the combustion chamber through the oil-drain port of piston by this negative pressure....
英字タイトル:
The lube oil leakage from indicator valves of Emergency Diesel Generator
第7回
著者:
武藤 誠志,Seishi MUTO,川辺 健一,Kenichi KAWABE,川嵜 透,Toru KAWASAKI
発刊日:
公開日:
キーワードタグ:
By evaluating the phenomena that hydrogen concentration of outlet gas in the off-gas treatment system at Hamaoka Unit 4 and 5 had increased, it was con cluded that the causes of the phenomena were transformation of support alumina by alteration of manufacturing process of catalysts and the deactivation by catalyst poisoning material. Therefore, the manufacturing process was modified and the poisoning material was identified and removed. Moreover, dev elopments such as catalyzer performance monitoring techn...
英字タイトル:
Study of Degradation of Off-Gas H2/02 Recombination Catalyst at Hamaoka Unit 4 and 5 Hiroyasu OOSUMI