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第7回
ポリイミド中空糸膜を用いた大気中トリチウム実時間計測装置の開発
著者:
濱田 明公子,Akiko HAMADA,小林 真,Makoto KOBAYASHI,倉田 理江,Rie KURATA,松岡 和志,Katsushi MATSUOKA,大矢 恭久,Yasuhisa OYA,奥野 健二,Kenji OKUNO
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Tritium from the nuclear power plants should be monitored at real-time. The development of real-time atmospheric tritium monitor is an important issue, since it was reported that tritium from the nuclear power plants was released as the form of HT and HTO, and released tritium was adsorbed plants and transported to numan through photosynthesis and food chain processes. This study was carried out to develop the separation-condensation technique for tritium using polyimide hollow fiber module. At first, ion ...
英字タイトル:
Research and development of real-time atmospheric tritium monitor by polyimide hollow fiber
第7回
ポンプ軸受の不具合の大きさと電磁診断技術の信号との相関関係
著者:
萱田 良,Ryo KAYATA,三好 剛正,Takemasa MIYOSHI,藤原 英起,Hideki FUJIWARA
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A new electromagnetic method for the nondestructive evaluation of electric pumps with ball bearings is proposed. A permanent m agnet generates a static magnetic field and a coil of several hundred turns wrapped around it is used to pick up eddy currents induced inside rotating ball bearings and impellers. First, a method that make use of the autocorrelation is applied to the si gnals of the ball bearings. A relation between the processed signals and the size of the defects in the bearings is obtained....
英字タイトル:
Electromagnetic Nondestructive Detection for Wounded Bearings andCorrelation of Size of Defect and Signal
第7回
マイクロカプセル作製技術の磁粉探傷試験への応用
著者:
伊東 富由美,Fuymi ITO,乗松 孝好,Takayoshi NORIMATSU,長井 圭治,Keiji NAGAI
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The purpose of the research is to apply the micro capsule technology to the facility maintenance. The micro capsule technology for laser fusion target was developed at the institute of laser engineering O saka University. We have a plan to apply the fabrication technology of polystyrene micro capsules to t he facility maintenance where the magnetic particle testing for complex piping system is investigated....
英字タイトル:
Application of the microcapsule fabrication technology to magnetic particle testing
第7回
マイクロ波を用いた配管減肉の位置検出に関する基礎研究
著者:
酒井 康智,Yasutomo SAKAI,遊佐 訓孝,Noritaka YUSA,橋爪 秀利,Hidetoshi HASHIZUME
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In this paper, inspection of the wall thinning in pipes with microwave is studied. Experimental v erifications are carried out to demonstrate that the response of microwave, time of flight, enabl es one to locate wall thinning. One of the advantages of this method is that whole pipe is evaluat ed at once Values of time of flight obtained by the experiments agree well with theoretical ones....
英字タイトル:
The basic study of microwave testing for locating wall thinning in pipes
第7回
マイクロ波時間領域測定法を用いた配管減肉計測の周波数依存性
著者:
近藤 佑輔,Yusuke KONDO,細井 厚志,Atsushi HOSOI,巨 陽,Yang JU
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Pipe wall thinning was evaluated quantitatively by using time domain measurement of Position of pipe wall thinning was evaluated quantitatively by using time domain measurement of microwaves, and the influence of the measurement sensitivity due to the frequency band of microwaves was investigated. Microwave signals having different frequency bands of 10MHz to 40GHz and 10MHz to 67GHz were transmitted from the terminal o f a straight line copper pipe, and the change in the response of the reflected signals ...
英字タイトル:
Frequency Dependence in the Measurement of Pipe Wall Thinning Using Time-Domain Microwave Testing
第7回
マニピュレータ型ロボットを適用したプラント保全技術
著者:
光畑 幸史,Yukifumi KOHATA,藤田 淳,Jun FUJITA,大西 献,Ken ONISHI,津張 博之,Hiroyuki TSUHARI,細江 文弘,Fumihiro HOSOE
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In the maintenance works at nuclear power plant, robots are used because of high r adiation, narrow space and underwater work. Various robots are needed because there is various maintenance works. This is inefficiency. As the solutions, we developed manipulator robots for the access of specialized tools. This study shows manipulato r robots developed by MHI, application example to maintenance works and effectivene ss of manipulator robots. When robotization of maintenance works are considered, ma nipulato...
英字タイトル:
The Application of Manipulator Robot for Nuclear Plant Maintenance
第7回
リスクと保全：諸外国における原子力への適用実績
著者:
伊藤 邦雄,Kunio ITO
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The application status of risk information in the area of operation and maintenance at US and European nuclear power plants has been reviewe d. In the US, risk-informed activities have become ingrained in nuclear power plant operation and maintenance over the past 15 years, provid ing both safety and operational benefits. In addition to the many US plants, Risk-Informed inservice inspection (RI-ISI) and On-Line Mainten ance have been utilized in many of the European nuclear power plants, especially at the ...
英字タイトル:
Risk and Maintenance : Application to Nuclear Power Plants in Foreign Countries
第7回
リスクモニタの実機適用に向けて
著者:
高橋 浩道,Hiromichi TAKAHASHI,山本 哲郎,Tetsuro YAMAMOTO,田中 太,Futoshi TANAKA
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On-Line-Maintenance (OLM) of NPP is under discussion for introduction of in Japan. Risk monitor is a ceal-time risk analysis tool used to determine the point-in-time risk based on the actual plant configuration, which assess increase in risk that may result from OLM activities. MHI adopted Risk Watcher“ provided by Swedish company Scandpower as risk monito r software and is developing it for Japanese utilities application. By Inputting PSA model into Risk WatcherTM, the risk-monitor is made up. It can calc...
英字タイトル:
Application Risk Watcher to Japanese PWR
第7回
リスク情報活用と保全
著者:
宮田 浩一,Koichi MIYATA
発刊日:
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In recent years, risk informed activities are being investigated as scientifically rational measures. Some Risk informed activities using Core Damage Frequency (CDF) have been already employed. Examples are extraction of accident management strategies, risk informed maintenance importance and such. This paper describes risk information such as CDF, risk profile, risk importance of equipments' contribution Eo risk, gained from Probabilistic Analysis (PSA). Furthermore, risk informed activities conducted and...
英字タイトル:
Risk Informed Maintenance Activity
第7回
中性子回折法による転がり軸受け内部の残留応力測定
著者:
平井 俊輔,Shunsuke HIRAI,上坂 充,Mitsuru UESAKA,藤原 健,Takeshi FUJIWARA
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Neutron diffraction technique is one of prevailing method to measure inner structure of material, such as molecular arrangement and lattice spacing by means of penetration of neutron. In particular the residual stress measurement by neutron diffraction has been developed an d is greatly performed in many research facilities, because the examination of residual stress existing materials is critically important to estimate fatigue of the materials and to maintain structural objects for efficient utilization....
英字タイトル:
Measurement of Inner Residual Stress of Bearing by Neutron Diffraction Technique
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