Shohei NAKAMA
著者に関連した記事は3件です。
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第5回
PWR蒸気発生器入口管台における割れ事例と点検規定について
著者:
堂﨑 浩二,Koji DOZAKI,中間 昌平,Shohei NAKAMA
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and Eddy Current Test Dissimilar Metal Weld Fitness-for-Service Code Inaccessible Region Primary Water Stress Corrosion Cracking Steam Generator Nozzle Ultrasonic Test
堂﨑 浩二,Koji DOZAKI,中間 昌平,Shohei NAKAMA
発刊日:
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and Eddy Current Test Dissimilar Metal Weld Fitness-for-Service Code Inaccessible Region Primary Water Stress Corrosion Cracking Steam Generator Nozzle Ultrasonic Test
Similar cracking events have been occurring on steam generator nozzles of Japanese PWR plants since the first case was found at Mihama-2 in September 2007. These cracks were found by eddy current test (ECT) prior to performing a kind of shot peening as a preventive measure on dissimilar metal weld (DMW), a nd were considered as primary water stress corrosion cracking (PWSCC) based on cause investigation. It was pointed out that surface finishing such as grinding or machining played an important role on cra...
英字タイトル:
Cracking Events on PWR Steam Generator Nozzles and Its Relationship to Inspection Rules
英字タイトル:
Cracking Events on PWR Steam Generator Nozzles and Its Relationship to Inspection Rules
第11回
スウェジロック継手応急補修治具の開発
著者:
中間 昌平,Shohei NAKAMA,小林 広幸,Hiroyuki KOBAYASHI,須田 康晴,Yasuharu SUDA,加福 秀考,Hidetaka KAHUKU,赤松 哲郎,Tetsuro AKAMATSU,岩田 知和,Tomokazu IWATA,松尾 隆司,Ryuji MATSUO
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leak miniature clamp Swagelok quick repair method Swagelok
中間 昌平,Shohei NAKAMA,小林 広幸,Hiroyuki KOBAYASHI,須田 康晴,Yasuharu SUDA,加福 秀考,Hidetaka KAHUKU,赤松 哲郎,Tetsuro AKAMATSU,岩田 知和,Tomokazu IWATA,松尾 隆司,Ryuji MATSUO
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leak miniature clamp Swagelok quick repair method Swagelok
Many Swagelok connections are used in the instrumental tube pipe of Nuclear power plant because Swagelok conne ion is easy to put on and take off quickly. Although Swagelok connection is easy handling, it occurs very sma ll amount of leakage in some case. For the purpose of development of quick repair method for small amount leak e of Swagelok connection, we considered the base technique about the miniature cramp for Swagelok connection....
英字タイトル:
Development of Miniature Cramp for Swagelok Connection Temporary Repair
英字タイトル:
Development of Miniature Cramp for Swagelok Connection Temporary Repair
第13回
プレストレストコンクリート製格納容器の維持管理と高経年化対策
著者:
中間 昌平,Shohei NAKAMA,忠田 恭一,Kyoichi CHUDA,森下 友一朗,Yuichiro MORISHITA
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In-service Inspection Maintenance PCCV Plant Life Management
中間 昌平,Shohei NAKAMA,忠田 恭一,Kyoichi CHUDA,森下 友一朗,Yuichiro MORISHITA
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In-service Inspection Maintenance PCCV Plant Life Management
Tsuruga Power Station Unit 2 (1,160 MW, PWR) has been operated since February 1987, and has long term maintenance experience for the past 29-years. Tsuruga Unit 2 is the first plant which applied prestressed concrete vessel (PCCV) in Japan. In-service inspection has been applied to PCCV, and it has been maintained good condition in spite of long term operation. Before the passing of 30 years from the start of operation, a technical evaluation of degradation of the PCCV due to aging needs to be performe...
英字タイトル:
Maintenance experience and Plant Life Management for Prestressed Concrete Containment Vessel of Tsuruga Power Station Unit 2
英字タイトル:
Maintenance experience and Plant Life Management for Prestressed Concrete Containment Vessel of Tsuruga Power Station Unit 2