Koji NISHINO
著者に関連した記事は3件です。
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第10回
ガイド波を用いたエルボウ部配管減肉検査の 信頼性評価法
著者:
小島 史男,Fumio KOJIMA,日置 純子,Junko HIOKI,西野 秀夫,Hideo NISHINO
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Guided wave NDI Pipe wall thinning measurement Probability of detection Reliability evaluation
小島 史男,Fumio KOJIMA,日置 純子,Junko HIOKI,西野 秀夫,Hideo NISHINO
発刊日:
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キーワードタグ:
Guided wave NDI Pipe wall thinning measurement Probability of detection Reliability evaluation
A guided wave testing is used in non-destructive inspections for pipe wall thinning and detects defects over a wide range of pipe. In this paper, first, hit/miss results are calculated from signal responses of the guided wave testing by using thresholds. The hit/miss results decide POD curves. We confirm the differences of the POD curves affected by the thresholds. Second, an optimal parameter tuning method which is effectively adjusted based on the condition of testing is integrated to the POD. The va...
英字タイトル:
Reliability Evaluation for Guided Wave Testing of Elbow Pipe Thinning
英字タイトル:
Reliability Evaluation for Guided Wave Testing of Elbow Pipe Thinning
第14回
原子力発電所の電動バタフライ弁駆動部の耐震性向上確証試験
著者:
堤 喜隆,Yoshitaka TSUTSUMI,芝 小島,小島 信夫,Nobuo KOJIMA,芝 渡部,渡部 幸夫,Yukio WATANABE,芝 西野,西野 浩二,Koji NISHINO,芝 米倉,米倉 和義,Kazuyoshi YONEKURA,熊谷 真,Shin KUMAGAI,神農 弘行,Hiroyuki KAMINO
発刊日:
公開日:
堤 喜隆,Yoshitaka TSUTSUMI,芝 小島,小島 信夫,Nobuo KOJIMA,芝 渡部,渡部 幸夫,Yukio WATANABE,芝 西野,西野 浩二,Koji NISHINO,芝 米倉,米倉 和義,Kazuyoshi YONEKURA,熊谷 真,Shin KUMAGAI,神農 弘行,Hiroyuki KAMINO
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The seismic tests were carried out to confirm the operability limit acceleration for the standard motor-operated butterfly valve actuator at three-direction each excitation. Based on the results, the design of seismic brackets that can operate valves even in 3 directions 20×9.8 m/s2 or more were performed on three representative models. In the model subjected to the seismic test, we mounted a designed seismic bracket and confirmed the operability of butterfly valve actuator by carrying out each vibrati...
英字タイトル:
Seismic test results of motor-operated butterfly valve actuators for nuclear power plants
英字タイトル:
Seismic test results of motor-operated butterfly valve actuators for nuclear power plants
第7回
電動弁診断技術の高度化への取り組み
著者:
松 幸太郎,Kotaro HEGI,清水 俊一,Shunichi SHIMIZU,日隈 幸治,Koji HIGUMA,西野 浩二,Koji NISHINO,尾崎 健司,Kenji OSAKI,渡部 和美,Kazumi WATANABE,濱野 文一,Frank HAMANO
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Condition-based Maintenance Diagnostics Motor-operated Valve Valve Performance
松 幸太郎,Kotaro HEGI,清水 俊一,Shunichi SHIMIZU,日隈 幸治,Koji HIGUMA,西野 浩二,Koji NISHINO,尾崎 健司,Kenji OSAKI,渡部 和美,Kazumi WATANABE,濱野 文一,Frank HAMANO
発刊日:
公開日:
キーワードタグ:
Condition-based Maintenance Diagnostics Motor-operated Valve Valve Performance
As use of condition-based maintenance is allowed in the new regulatory inspection system employed in Japan's nuclear pow er plants in 2009, development of advanced diagnostic technologies for motor-operated valves (MOVs) is now required. This report discusses advanced technologies in valve-setup verification, valve performance evaluation, monitoring of valve/ac tuator conditions by performance diagnostic system and moreover detection of stem crack by ultrasonic diagnostic system....
英字タイトル:
Development of Advanced Diagnostic Technologies for Motor-operated Valves
英字タイトル:
Development of Advanced Diagnostic Technologies for Motor-operated Valves