144件が見つかりました。

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第5回
SUS304鋼におけるクリープ歪と強磁性相の生成
著者:
白木 厚寛,Atsuhiro SHIRAKI,塚田 祐貴,Yuhki TSUKADA,村田 純教,Yoshinori MURATA,高屋 茂,Shigeru TAKAYA,小山 敏幸,Toshiyuki KOYAMA
発刊日:
公開日:
キーワードタグ:
This study demonstrates the mechanism of y ? a transformation in creep test on the basis of the energy o f the system. The experimental result shows that the strain energy around M23Co carbide becomes very high due to dislocations stored during creep. As a result, the system free energy in the local region near the carbide increases with increasing creep time but it decreases by the formation of ferromagnetic a phase....
英字タイトル:
Formation of ferromagnetic phase in SUS304 steel by strain energy stored during creep test
第5回
3.95 MeV X-band Linacを用いた高エネルギーX線非破壊検査装置の開発
著者:
山本 智彦,Tomohiko YAMAMOTO,夏井 拓也,Takuya NATSI,上坂 充,Mitsuru UESAKA,田辺 英二,Eiji TANABE,中村 直樹,Naoki NAKAMURA,山本 昌志,Masashi YAMAMOTO
発刊日:
公開日:
キーワードタグ:
We are developing portable non-destructive testing (NDT) X-ray source with X-band linac and low power magnetron. Now, we start the experiment of electron acceleration and X-ray generation using by 950 keV X-band linac NDT system. The 950 keV X-band linac X-ray generator is under development for corrosion wastage of tubes and condition bas ed maintenance of impeller pumps. However, about 1 MeV X-ray source can be only used for thin tubes of about 20 mm thickness. Therefore, we start to design about 4 MeV X-...
英字タイトル:
Development of High Energy X-ray NDT System with 3.95 MeV X-band Linac
第5回
CMS（コンディションモニタリングシステム）による状態監視診断
著者:
諸田 秀嗣,Morota HIDETSUGU
発刊日:
公開日:
キーワードタグ:
The Japan Atomic Power Company The CBM (Condition Based Maintenance) is very effective to make improvement utilization rate on an electric power facility. In case of the CBM, it is often the case such as a vibration diagnosis for rotating components based on direct measurements. The CMS (Condition Monitoring System), which is an effective tool for a plant performance analysis and assesse s components and plant performances based on heat and mass balance calculations, has beneficial effect to proceed more e...
英字タイトル:
Condition Monitored Diagnosis by the CMS (Condition Monitoring System)
第5回
EMATによる大規模3次元画像再構成
著者:
西村 良弘,Yoshihiro NISHIMURA,笹本 明,Akira SASAMOTO,鈴木 隆之,Takayuki SUZUKI
発刊日:
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キーワードタグ:
Instead of using the array probe, the study of 3D image reconstruction using the single probe was done. EMAT single probe has large diameter and large aperture and so the ultrasonic wave propagates not only toward direction z but also x-y directions. An d so the time series of data received by EMAT probe include the information of the flaws not only in z direction but also in x-y direction and it means the image has higher resolution than that can be expected from the sampling space in x-y direction ca n b...
英字タイトル:
The study of 3D image reconstruction using EMAT
第5回
FGセンサを用いた高精度損傷評価技術
著者:
鈴木 隆之,Takayuki SUZUKI,寺崎 亮実,Akimitsu TERASAKI,笹本 明,Akira SASAMOTO,西村 良弘,Yoshihiro NISHIMURA,寺本 徳郎,Tokuo TERAMOTO
発刊日:
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キーワードタグ:
Magnetic flux leakage measurements were performed by using a fluxgate sensor. For an artificial defect of 0.3mm width of SS400 steel, changes in p erpendicular magnetic flux leakage B, could be measured at a lift off height of 5mm, and changes in longitudinal magnetic flux leakage B, could be measured at a lift off height of 10mm. For artificial surface defects, magnetic flux density distribution of By was well correlated to the shape o f the defects. In-situ magnetic flux density measurement By for permal...
英字タイトル:
High Accuracy Damage Evaluation Technique Using FG Sensor
第5回
JMTR原子炉建家及び排気筒の健全性調査
著者:
花川 裕規,Hiroki HANAKAWA,塙 善雄,Yoshio HANAWA,出雲 寛互,Hironobu IZUMO,深作 秋富,Akitomi FUKASAKU,長尾 美春,Yoshiharu NAGAO,宮澤 正孝,Masataka MIYAZAWA,新見 素人,Motoji NIIMI
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The JMTR is under the refurbishment and will start on FY 2011. The JMTR will operate for about 20 years from 2011. Before this JMTR operation, preliminary inspection of seconda ry cooling system piping was carried out in order to make a maintenance plan.As the resu lts of this inspection, it was confirmed that the corrosion was reached by piping ingot, or decrease of piping thickness could hardly be observed. Therefore, it was confirmed th at the strength or the functionality of the piping had been mai...
英字タイトル:
Preliminary Inspection of Secondary Cooling System Piping for Maintenance Plan in JMTR
第5回
JRR-3における保守点検の実績評価
著者:
小林 哲也,Tetsuya KOBAYASHI,市村 俊幸,Toshiyuki ICHIMURA,佐藤 正幸,Masayuki SATO
発刊日:
公開日:
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The maintenance evaluation for research reactors has been obligated in Japan from 2004 as for power reactors. JAEA (Japan A tomic Energy Agency) has started to evaluate the maintenance for own research reactors on 2004. In this paper, we report th e present status of the maintenance for JRR-3(Japanese Research Reactor No.3), as well as the linear evaluation methods use d. It is found that a series of preventing maintenance task on equipment and building of the reactor is properly performed....
英字タイトル:
Assessment of Preventing Maintenance on Japanese Research Reactor JRR-3
第5回
JSME維持規格における周方向欠陥角度制限の代替規定
著者:
町田 秀夫,Hideo MACHIDA
発刊日:
公開日:
キーワードタグ:
The new Code Case to substitute the allowable crack angle for a circumferential surface crack in “Rules on Fitness-for-Service (FFS)” published from The Japan Society of Mechanical Engineers (JSME). Until now, th e angle of a circumferential surface crack was limited below 60°. This is the limitation with consideration to the stability of the crack if the deep crack penetrates wall of the pipe. Therefore, a long crack (su ch like an SCC) was obliged to repair or replace even if it was shallow enough. Weld ...
英字タイトル:
Code Case to Substitute the Allowable Crack Angle in Rules on Fitness-for-Service Codes of JSME
第5回
PaM（原因除去型保全）導入に向けた潤滑油管理の取組みについて
著者:
杉原 雅紀,Masanori SUGIHARA,広瀬 逸夫,Itsuo HIROSE,矢野 裕二,Yuji YANO
発刊日:
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Lubricant management is very important to maintain the integrity of rotating equipment. Lubricant is periodically replaced and monitored on its aging degr adation between replacement times. On the other hand, only the confirmation of specification document has been performed as acceptance inspection in case of new lubricant. However, a comparatively large amount of impurity substances has been found in new lubricant by sample analysis. Therefore, the introduc tion of contamination control of new lubricant ...
英字タイトル:
Application of Contamination Control of Lubricant to Proactive Maintenance
第5回
PD資格試験開始から2年の実施状況
著者:
直本 保,Tamotsu JIKIMOTO,笹原 利彦,Toshihiko SASAHARA,秀 耕一郎,Koichiro HIDE
発刊日:
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キーワードタグ:
The PD Center at the Central Research Institute of Electric Power Industry (CRIEPI) commenced Performance Demonstra tion examinations for flaw depth sizing of austenitic stainless steel pipes in March 2006. As of April, 2008, 18 ex amination courses have been completed and 22 out of 36 candidates passed the examination. Many candidates failed th e PD examination due to a failure to distinguish between crack tip echo and echo from weld to base-metal interface....
英字タイトル:
Report on Performance Demonstration for depth sizing of austenitic stainless steel pipes
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