136件が見つかりました。

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第15回
設備の状態監視と診断の進め方について
著者:
福田 文弘,（西日本プラント工業）
発刊日:
公開日:
Nishinippon Plant Engineering and Construction Co., Ltd have been engaged in maintains of the Genkai nuclear power plant of Kyushu Electric Power Co., INC. For further maintenance of equipment, we started vibration diagnosis in 2008 and infrared diagnosis in 2010. We have been applied these methods for all faciilliitt1ies and evaluated the data and applied decision making on maintenance....
英字タイトル:
The method for condition monitoring and diagnostics of facilities.
第15回
試験及び解析による構造物の局部破損の支配因子に関する研究
著者:
恒本 芳樹,坂口 貴史,佐藤 拓哉,笠原 直人,（東京大）
発刊日:
公開日:
キーワードタグ:
Experimental and analytical study was carried out with notched specimens which simulated multiaxial stress state in structural discontinuity, in order to reveal the mechanism and dominant parameters of “local failure”. Both the tensile test and finite element analyses (FEA) exhibited, notch strengthening. Furthermore, in the tensile test, failures of notched specimens were progressed from inside, where hydrostatic stress showed the maximum value in the FEM, whereas Mises stress did not show the maximum valu...
英字タイトル:
Experimental and Analytical Study on Dominant Parameters of Local Failure of Structures
第15回
超音波を用いた設備診断のご提案
著者:
岩崎 正志,加藤 剛,小鯛 詠史,徐 佳?,棈松 悠亮,李 曙嬰,（東北エンタープライズ）
発刊日:
公開日:
キーワードタグ:
設備診断に用いられる手法として潤滑油、振動、サーモ診断等がよく挙げられますが、海外ではこれらの診断技術と一緒に設備の複合診断として超音波を利用した手法がよく用いられています。超音波が発生する要因とその超音波を可聴音に変換し、様々なアプリケーションでどのように活用できるかについて、装置のご紹介と共に事例紹介を致します。...
第15回
超音波探傷法による管内面の水蒸気酸化スケール厚さ測定
著者:
松山 寿継,浅野 裕一,岩里 拓弥,（新日本非破壊検査）
発刊日:
公開日:
キーワードタグ:
Steam oxidation scale is generated on the inner surface of the pipe through which the high temperature steam flows. The thickness of this scale increases as the lapse of running time, and causes various adverse effects. For this reason, it is necessary to manage the thickness of this scale. Therefore, we investigated a method of measuring the thickness of steam oxidation scale on the inner surface of pipe by ultrasonic testing....
英字タイトル:
Measurement of steam oxidation scale thickness on the inner surface of pipe by ultrasonic testing
第15回
超音波探傷試験技術者に対するUTシミュレータ訓練の有効性検討
著者:
平澤 泰治,松田 誠司,牧原 善次,（発電技検）
発刊日:
公開日:
キーワードタグ:
In our country, the ultrasonic testing (UT) has been carried out according to the JEAC 4207 in ISI. In this code, the ultrasonic personnel are required to the education and training concerning the UT of ISI in the nuclear power plant. Therefore, the ultrasonic personnel are trained to keep the high-level skills such as defect detection, classification of detected echoes and so on, using the own training program of the inspection companies. Thus, in order to keep the inspection skills of the ultrasonic perso...
英字タイトル:
Investigation of Applicability of Inspection Skill Training using UT Simulator for Ultrasonic Personnel
第15回
軽水炉コンクリート構造物の照射劣化予測手法の開発に係る研究計画
著者:
滝沢 真之,鈴木 清照,江藤 淳二,河合 理城,藤山 翔乃,（三菱総研）,丸山 一平,（名古屋大）,紺谷 修,澤田 祥平,石川 俊介,（鹿島建設）
発刊日:
公開日:
キーワードタグ:
A new research program of irradiation effects on LWR concrete member has been started since 2017. The previous research results indicate the reference level of neutron irradiation degradation on concrete should be set at 1 x 1019 n/cm2 which is one order of magnitude lower than the conventional reference level used in Japan. Several issues remain after the previous research and the objectives for clarifying the issues are set in the new project which is scheduled for five and half years. And international c...
英字タイトル:
The Research Plan on Development of Evaluation Method of LWR Concrete Irradiation Effect
第15回
連続肉厚測定が可能な超音波探触子の耐熱性向上および遠隔測定装置の開発
著者:
酒井 裕介,吉田 正志,松下 義昭,（東京電力HD）
発刊日:
公開日:
キーワードタグ:
Pipe wall thickness in power plant have been measured during the periodic inspection to evaluate soundness and safety by Ultrasonic Testing (UT). But it takes a long time and man power to complete measurement and evaluation. In this study, “Flex Dry UTM” is developed as a new kind of UT system for making it possible to monitor pipe wall thickness continuously. It is attached directly to pipe under the lagging material without using coupling medium. The maximum temperature it can be applied is developed to b...
英字タイトル:
Development of heat resistant ultrasonic probe for continuous wall thickness measurement and remote measuring equipment
第15回
過酷事故時の溶融デブリによるコンクリートの熱的 劣化とセラミックスの熱耐性に関する実験的研究
著者:
奈良林 直,（東工大）,晴山 隆仁,（北海道庁）,千葉 豪,（北海道大）,林 司,（中国電力）,今野 隆博,（日立GE),山口 篤憲,（保全学会）
発刊日:
公開日:
キーワードタグ:
In Fukushima accident on 2011, molten core supposed to be leaked on the concreate floor in containment vessel. Development of small type of core catcher which can be installed in operating nuclear power plant is needed. In this investigation, the thermal deterioration of concreate and Magnesia-Carbon brick observed trough surface observation by microscope and measurement of compressive strength, weight reduction, and difference of void ratio. In addition, permeability measurement for burned concreate was op...
英字タイトル:
Study on Thermal Deterioration of Concreate and Thermal durability of Ceramics
第15回
配管減肉検査における非接触超音波センサの実機適用に向けた検討
著者:
田村 明紀,遠藤 正男,河野 尚幸,（日立製作所）,大城戸 忍,（日立GE）,Chenghuan Zhong,Maria Kogia,（Inductosense）,Anthony J. Croxford,Paul D. Wilcox,（ブリストル大）
発刊日:
公開日:
キーワードタグ:
A pipe-wall thinning measurement is required to ensure integrity of a piping system in a power plant. Aiming to reduce the inspection time of the pipe-wall thinning measurement, we have been developing an innovative measurement technology which enables the pipe-wall thinning inspection without removing the insulation, based on the non-contact ultrasonic sensor proposed by University of Bristol. To apply this technology to the actual plant inspection, the sensor durability needs to be confirmed. In this stud...
英字タイトル:
Investigation into applicability of a non-contact ultrasonic sensor to pipe-wall thinning inspection of power plants
第15回
配管減肉測定の高度化を目指した焦点型電磁超音波探触子の開発
著者:
手塚 晃世,孫 宏君,浦山 良一,内一 哲哉,高木 敏行,（東北大）
発刊日:
公開日:
キーワードタグ:
Electromagnetic acoustic transducer (EMAT) generates ultrasonic wave without direct contact with the specimen. This feature allows EMAT to be used under higher temperature environment compared with piezoelectric transducer, which means EMAT has a potential to be applied to monitoring of the piping system of operating power plants. However, the conventional EMAT may read thicker than the actual thickness of the pipe wall in the case of degraded pipes with rough surface. This is because the reflected signal i...
英字タイトル:
Development of point focusing electromagnetic acoustic transducer for accurate pipe wall thinning measurement
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