Shinobu OKIDO
著者に関連した記事は4件です。
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論文
実機プラントの炉心シュラウドへのウォータージェットピーニング（WJP）適用とWJP施工後の残留応力測定
著者:
大城戸 忍,Shinobu OKIDO,椿 正昭,Masaaki TSUBAKI,千葉 篤志,Atsushi CHIBA,佐川 渉,Wataru SAGAWA,松田 徹,Toru MATSUDA
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Nuclear Power Plant Reactor Internal Components Residual Stress Shroud Water Jet Peening(WJP) Weld X-ray Stress Measurement
大城戸 忍,Shinobu OKIDO,椿 正昭,Masaaki TSUBAKI,千葉 篤志,Atsushi CHIBA,佐川 渉,Wataru SAGAWA,松田 徹,Toru MATSUDA
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Nuclear Power Plant Reactor Internal Components Residual Stress Shroud Water Jet Peening(WJP) Weld X-ray Stress Measurement
Residual stress improvement technologies have been developed and applied to Boiling Water Reactor (BWR) plant components in order to prevent from stress corrosion cracking (SCC) of stainless steel and Ni-based alloy materials. Water Jet Peening (WJP) is one of the effective procedures for residual stress improvement, and has the various advantages for the application to the reactor internal components of the operating nuclear power plants because WJP uses only water for residual stress improvement. As...
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Application of Water Jet Peening to the Shroud Components in BWR Power Plant and Residual Stress Measurement after WJP.
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Application of Water Jet Peening to the Shroud Components in BWR Power Plant and Residual Stress Measurement after WJP.
第7回
小口径配管の残留応力改善手法の開発
著者:
福田 ゆか,Yuka FUKUDA,折谷 尚彦,Naohiko ORITANI,大城戸 忍,Shinobu OKIDO
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Cooling Heating Piping Residual Stress Stress Corrosion Cracking Thermal Stress
福田 ゆか,Yuka FUKUDA,折谷 尚彦,Naohiko ORITANI,大城戸 忍,Shinobu OKIDO
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Cooling Heating Piping Residual Stress Stress Corrosion Cracking Thermal Stress
It is well understood that the reduction of the residual tensile stress in the welded zone is effective as inhibitor of occurrence and growth of SCC in low-carbon stainless steel. Therefore, some stress reduction methods for the pipe welded zone have already been developed. However, stress reduction method for small-bore, thin-wall pipes which nominal outside diameter are 60.5mm and below, have not been established. In this study, residual tensile stress reducti on method that is applicable to small-bore p...
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DEVELOPMENT OF STRESS REDUCTION METHODIN THE SMALL-BORE PIPE
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DEVELOPMENT OF STRESS REDUCTION METHODIN THE SMALL-BORE PIPE
第12回
検査技術の高度化・効率化による検査期間の短縮化
著者:
大城戸 忍,Shinobu OKIDO,今野 隆博,Takahiro KONNO,多田 伸雄,Nobuo TADA,桐山 和久,Kazuhisa KIRIYAMA
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Inspection Maintenance optimization Maintenance plan Operating rate Outage
大城戸 忍,Shinobu OKIDO,今野 隆博,Takahiro KONNO,多田 伸雄,Nobuo TADA,桐山 和久,Kazuhisa KIRIYAMA
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Inspection Maintenance optimization Maintenance plan Operating rate Outage
After the Great East Japan Earthquake, as for the nuclear power plant, addition and modifying of the facility to operate more safely are pushed forward under the thought of the new regulation standard. After the safety of the nuclear power plant being confirmed, and having operated again, an outage is carried out every 13 months. Efficiency of the inspection work is necessary to end outage during a same period as the past though facilities for safety enhancement are added to subject of inspections. In ...
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Shortening of outage by advancement and the efficiency of the inspection techniques.
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Shortening of outage by advancement and the efficiency of the inspection techniques.
第14回
配管減肉検査における非接触超音波センサの 適用性に関する基礎的検討
著者:
田村 明紀,Akinori TAMURA,河野 尚幸,Naoyuki KONO,大城戸 忍,Shinobu OKIDO,Chenghuan ZHONG,Erik FABRE,AnthonyJ. CROXFORD,D. WILCOX
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non-contact measurement pipe insulation Pipe-wall thinning inspection ultrasonic measurement
田村 明紀,Akinori TAMURA,河野 尚幸,Naoyuki KONO,大城戸 忍,Shinobu OKIDO,Chenghuan ZHONG,Erik FABRE,AnthonyJ. CROXFORD,D. WILCOX
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non-contact measurement pipe insulation Pipe-wall thinning inspection ultrasonic measurement
A pipe-wall thinning measurement is one of key inspections to ensure the integrity of the piping system in power plants. Since the pipes of the power plants are covered with insulation, the removal of the insulation, which is time-consuming process in general, is required for the pipe-wall thinning inspection. We have been developing an innovative measurement technology, which enable the pipe-wall thinning inspection without removing the insulation, based on the non-contact ultrasonic sensor proposed by ...
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Feasibility study of non-contact ultrasonic sensor for pipe-wall thinning inspection of power plants
英字タイトル:
Feasibility study of non-contact ultrasonic sensor for pipe-wall thinning inspection of power plants