152件が見つかりました。

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第7回
音源探査装置の開発とその活用
著者:
和田 浩之,Hiroyuki WADA,大脇 雅直,Masanao OWAKI,山下 恭弘,Yasuhiro YAMASHITA
発刊日:
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キーワードタグ:
The symptom often appears as a sound change before equipment breaks down. Therefore, it is important to observe the of the noise and the vibration caused while equipment is driving, and to detect abnormality of equipment at the stone However even if ahnormality of the sound can be nerceived it is difficult to specifv abnormal parts. The symptom often appears as a sound change before equipment breaks down. Therefore, it is important to observe the state of the nois e and the vibration caused while equipmen...
英字タイトル:
Development and its utilizing method of the equipment which search the position of sound source and display visually
第7回
音響診断によるグリス潤滑式軸受の適切な保守管理
著者:
神保 吉秀,Yoshihide JIMBO,岸田 光博,Mitsuhiro KISHIDA,黒柳 克巳,Katsumi KUROYANAGI,堀田 治,Osamu HOTTA,肥田 茂,Shigeru HIDA
発刊日:
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This paper describes effectiveness of applying acoustic diagnosis to the greasing work. When we hear abnormal sounds from grease lubricated bearings, we try greasing. As a result, usually abnorm al sounds fade away. But after a while sometimes the sounds appear again. Therefore we try greasing again. The sounds fade away at the time but later appear again. We try greasing again and agai n but the results are the same. By this time, the temperature of the bearing has increased a lot. If the temperature incr...
英字タイトル:
Acoustic diagnosis improves maintenance of grease lubricated bearings
第7回
音響診断によるＣＢＭの作業安全性と信頼性の向上
著者:
神保 吉秀,Yoshihide JIMBO,岸田 光博,Mitsuhiro KISHIDA,黒柳 克巳,Katsumi KUROYANAGI,堀田 治,Osamu HOTTA,肥田 茂,Shigeru HIDA
発刊日:
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キーワードタグ:
This paper describes study of effectiveness of applying acoustic diagnosis to CBM(Condition Based Maintenance). We usually measure data of vibration of rotating machines with accelerometer to monitor the condition of it. This work is dangerous because we put the accelerometer near the rotating shaft of the machines by hand. Therefore we tried the non-contact sensing using a microphone of acoustic diagnosis and checked the data. As a result, we got the enou gh data for the monitoring safely.When rotating ma...
英字タイトル:
Acoustic diagnosis Improves work safety and reliability of CBM
第7回
高レベル放射性物質研究施設(CPF)における保全活動への取組み「Ⅰ. 高放射性物質閉じ込め用負圧コントロール弁の経年劣化への対応」
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:
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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
高温超電導電磁石を用いたタービン羽根の電磁診断
著者:
黄 宇,Haoyu HUANG,高瀬 健太郎,Kentaro TAKASE,柴下 直昭,Naoaki SHIBASHITA,釘本 三男,Mitsuo KUGIMOTO,塚本 透,Toru TSUKAMOTO
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Abstract: This study proposes an electromagnetic method for the evaluation of the condition of a turbine in a nuclear power plant. Experimental results of a small turbine driven by an electric motor are shown in th is paper. A high temperature superconductivity electromagnet is applied outside the case of the turbine to provide excitation magnetic field. On the other hand, pickup coils are placed near the impeller inside the case of the turbine. The experimental results show that it is not only possible to...
英字タイトル:
Electromagnetic evaluation of the impeller of a turbine using a hightemperature superconductivity electromagnet
第7回
高経年化対策の研究開発における産学官の連携
著者:
石垣 宏樹,Hiroki ISHIGAKI,大崎 徹,Toru OSAKA,菅野 眞紀,Masanori KANNO,宮野 廣,Hiroshi MIYANO
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キーワードタグ:
Many activities for the coordinated research on aging management are reviewed, and examples of fruitful results are introduced according to the technical strategy map. Industry-Academia-Government exchanging system of the information each other on aging management was established for autonomy, diversity, ration. To clarify the concept of the role of industry, government and academia to address aging ment without duplication algorithm is for the overall coordination of industrial and academic ition and resp...
英字タイトル:
Coordination Among Industry, Academic Society and Regulatory Bodyin The Research on Aging Management
第7回
高速実験炉「常陽」の保守経験 (1) 「常陽」における保守活動の概要
著者:
住野 公造,Kozo SUMINO,小林 哲彦,Tetsuhiko KOBAYASHI,礒崎 和則,Kazunori ISOZAKI,吉田 昌宏,Akihiro YOSHIDA
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キーワードタグ:
In the experimental fast reactor Joyo, maintenance work was conducted based on the classification of safety importance ov er thirty years. Through the experience, it was confirmed that particular effort was not necessary for the maintenance of sodium cooling systems by controlling the coolant purity properly. Additionally, as a result of the technical review on aging for whole plant, significant aging phenomenon that is particular with sodium cooled fast reactor was not observed....
英字タイトル:
Maintenance experience of Experimental Fast Reactor Joyo (1)The outline of maintenance activities in Joyo
第7回
高速実験炉「常陽」の保守経験 (2)「常陽」ナトリウム冷却系電磁ポンプの保守経験
著者:
須藤 正義,Masayoshi SUTO,菅谷 孝,Takashi SUGAYA,住野 公造,Kozo SUMINO
発刊日:
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キーワードタグ:
Maintenance for five electromagnetic pumps in sodium cooling system of Joyo has been conducted successfully consi dering their operational and environmental conditions. As a result of the periodical surveillance over thirty yea rs, it was confirmed that the pumps could be maintained their integrity during the planned service period of Joyo. Additionally, based on the experiences, the long term maintenance program for electromagnetic pumps was decided....
英字タイトル:
Maintenance experience of Experimental Fast Reactor Joyo (2) The maintenance experience on the electromagnetic pumps in Joyo sodium cooling system
第7回
高速実験炉「常陽」の保守経験 (3)非常用ディーゼル発電機のクランク軸受摩耗の原因と対策
著者:
舟木 功,Isao FUNAKI,飛田 茂治,Shigeharu TOBITA,長井 秋則,Akinori NAGAI,西野 一成,Kazunari NISHINO
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In Joyo, maintenance program for the emergency diesel generators was revised, because it was confirmed that the wear on the cranks haft bearing was caused by the accumulation of carbon particles through the repetition of short term operation over thirty years....
英字タイトル:
Maintenance experience of Experimental Fast Reactor Joyo (3) The countermeasure for wear of the crankshaft bearing of the diesel generator
第7回
高速炉サーベイランスのための中性子ドシメトリー
著者:
伊藤 主税,Chikara ITO,前田 茂,Shigetaka MAEDA,青山 卓史,Takafumi AOYAMA,井口 哲夫,Tetsuo IGUCHI
発刊日:
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キーワードタグ:
Neutron dosimetry techniques have been developed for fast reactor surveillance in long-term irradiation as the range of 10° -10 years. The high accurate and precise measurement of “Nb(n,n')93mNb reaction rate was established for fast reactor dosimetry. The effect of gamma -ray self-absorption was decreased by dissolution and evaporation to dryness of niobium dosimeter in the established method. It was confirmed that theNb(n,n') mNb reaction rate could be measured with an uncertainty within 3 % by this meth...
英字タイトル:
Neutron Dosimetry for Fast Reactor Surveillance
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