138件が見つかりました。

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第10回
1線式PLCによる信号中継システムの提案
著者:
都築 伸二,Shinji TSUZUKI,松井 隆,Takashi MATSUI
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Abstract: The conventional narrowband power-line communication (NB-PLC) is a two-wire system, that have transmitted its signal between wires with a capacitive coupler. When performing communication between floors at a large-sized building, the signal has to travel over long-distances across a switchboard which supplies electricity to distribution boards. Moreover, the signal is attenuated also at the switchboard and distribution boards. Then signal amplifiers have had to be installed at the boards. In...
英字タイトル:
Proposal of Signal Repeater by One Wire PLC system
第10回
ACM センサを用いた空調ダクトの予防保全計画
著者:
福場 一司,Kazushi FUKUBA,藤 孝信,Takanobu ITO,島 明子,Akiko KOJIMA,丹治 和宏,Kazuhiro TANJI,佐藤 優樹,Yuki SATO
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Air-conditioning duct is difficult to predict the date to occur of corrosion such as affect the function. Therefore, the current conservation method is mostly corrective maintenance. Therefore, was used the test pieces of six types and ACM-sensor in order to solve the corrosion speed from corrosion environment and relationship of corrosion quantity of test pieces. In addition, was used the duct molded articles various in order to check the corrosion degree of when processed the duct. As a result, we we...
英字タイトル:
Preventive maintenance plan of the air-conditioning duct using the ACM-sensor
第10回
Flaw Tolerance手法を用いた疲労評価手法の開発
著者:
朝田 誠治,Seiji ASADA,竹田 周平,Shuhei TAKEDA,平澤 泰治,Taiji HIRASAWA,齋藤 利之,Toshiyuki SAITO,齋藤 格,Itaru SAITO,堂崎 浩二,Koji DOZAKI
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The JSME Committee on Power Generation Facility Codes is developing a fatigue evaluation method by flaw tolerance. The ASME B& PV Code Section XI has Non-mandatory Appendix L, which provides a flaw tolerance method for fatigue evaluation when a cumulati ve usage factor (CUF) of a component is greater than 1.0. In order to develop a flaw tolerance method for the JSME Codes, post ulated initial flaws, capability of nondestructive examination, compatibility to rules and flaw tolerance codes are discussed....
英字タイトル:
Development of Fatigue Evaluation Using Flaw Tolerance Method
第10回
Partial Inspection and Dual-energy CT Material Analysis with 950keV/3.95MeV X-Band Linac
著者:
Wenjing WU,Haito ZHU,Ming JIN,Katsuhiro DOBASHI ,Takeshi FUJIWARA,Mitsuru UESAKA,Joichi KUSANO,Naoki NAKAMURA ,Eiji TANABE ,Hideyuki SUNAGA ,Yoshie OTAKE
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In situ CT application for NDE of degradation bridges is under development, with portable 950keV/3.95 MeV X-band linac as x-ray source. Collimator is adopted to reduce scattered X-ray noise. Material analysis and erosion estimation through dl-energy CT method is integrated in order to inspect the erosion situation of i nner steel rod. Reconstruction technique with incomplete projection data is studd considering limitation of projection angle range during onsite scanning. Furt hermore, based on 3D model bui...
英字タイトル:
Partial Inspection and Dual-energy CT Material Analysis with 950keV/3.95MeV X-Band Linac
第10回
PD 資格試験開始から7年の実施状況
著者:
渡辺 恵司,Keiji WATANABE,東海林 一,Hajime SHOHJI,秀 耕一郎,Koichiro HIDE
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The PD Center of Central Research Institute of Electric Power Industry (CRIEPI) commenced Performance Demonstration examinations for flaw depth sizing of austenitic stainless steel pipes in March 2006. As of January 2013, 37 examination sessions have been completed and 44 candidates have passed the examination. The total number of tests administered including re-tests and re-certification was 89. It was noted that depth sizing using a phased array plus the manual UT technique was the procedure most use...
英字タイトル:
Report on Japanese Performance Demonstration examinations For depth sizing of SCC in austenitic stainless steel pipes
第10回
PIRT による材料劣化潜在事象のプロアクテイブ評価
著者:
庄子 哲雄,Tetsuo SHOJI,国谷 治郎,Jiro KUNIYA,竹田 陽一,Yoichi TAKEDA
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A Proactive Materials Degradation Management (PMDM) project has been carried out at the Frontier Research Initiative (FRI), New Industry Creation Hatchery Center, Tohoku University for 5 years, as a part of a Nuclear Industries Safety Agency (NISA, now the Secretariat of the Nuclear Regulation Authority) project that was originally formed in 2007 to define an Aging Management Program that addresses unexpected structural material failures in Light Water Reactors (LWRs). Such a program required, therefor...
英字タイトル:
Proactive Evaluation of Potential and Latent Materials Degradation Phenomena by PIRT
第10回
POD 法による配管減肉検査の信頼性評価法と ハザードレートへの適用
著者:
中本 裕之,Hiroyuki NAKAMOTO,小島 史男,Fumio KOJIMA,加藤 翔,Sho KATO
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This paper proposes a method of applying a reliability of inspection data to a calculation of hazard rate. First, the probability of detection (POD) is calculated from inspection data of thickness measurement of pipe wall by an ultrasonic thickness meter. The inspection data are collected from experiments by qualified or unqualified inspectors. The POD outputs probabilities of reliability assessment based on the inspection data. Second, the probabilities are used for a timing estimation of pipe hazard....
英字タイトル:
Reliability assessment for thickness measurements of pipe wall using probability of detection and application to hazard rate
第10回
SCC内部導電率分布を考慮したECTによる 深さサイジング技術高度化
著者:
堀 輝人,Teruhito HORI,高瀬 健太郎,Kentaro TAKASE,越智 文洋,Fumihiro OCHI,佐藤 友康,Tomoyasu SATO
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In the field of nondestructive inspection by eddy current testing, various approaches to the depth-sizing of SCCs by numerical inversion analysis have been taken so far. However, its accuracy is not so high and limited to a certain extent because of no information about the real value of inner conductivity of SCCs. Therefore, we first investigated experimentally the inner conductivity distribution of several artificial SCCs by a precise mechanical processing and 4 terminal resistance measurement. From ...
英字タイトル:
Improvement of a SCC depth-sizing technique using ECT analysis with detailed investigation of SCC conductivity distribution
第10回
SVMを用いた最適な学習変数予測手法
著者:
箕輪 弘嗣,Hirotsugu MINOWA,五福 明夫,Akio GOFUKU
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Study of diagnostic system using machine learning to reduce the incidents of the plant is in advan because an accident causes large damage about human, economic and social loss. There is a proble m that 2 performances between a classification performance and generalization performance on the m hine diagnostic machine is exclusive. However, multi agent diagnostic system makes it possible to use a diagnostic machine specialized either performance by multi diagnostic machines can be used. We propose method t...
英字タイトル:
Method to predict process signals to learn using SVM
第10回
Web 型遠隔自動振動診断システムの開発
著者:
迫 孝司,Takashi SAKO,妹尾 始朗,Shirou SENOO,岩崎 俊二,Shunji IWASAKI,荒木 竜二,Ryuji ARAKI,田村 孝市,Kouichi TAMURA
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The vibration method is most used in various condition monitoring technology of the rotary machines. This time, the Web type automatic vibration diagnostic system was developed for the purpose of support of condition monitoring and diagnosis. In this system, if vibration measurement data is sent to the server of our company through the Internet, automatic diagnosis will be carried out. The result can download as a diagnostic report. By this system, working efficiency of the diagnostic technical enginee...
英字タイトル:
Development of the Web type Remote Automatic Vibration Diagnosis System
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