坪井 雅俊
著者に関連した記事は3件です。
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第17回
東海再処理施設 動力分電盤内制御用電源回路の分離による 給電系の安全性向上
著者:
後藤 翔,青木 賢二,森本 憲次,坪井 雅俊,磯崎 尚彦,古川 竜一,北川 修,（JAEA）,深谷 康弘,（検査開発）
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Power distribution board Power supply circuit for control Tokai reprocessing plant
後藤 翔,青木 賢二,森本 憲次,坪井 雅俊,磯崎 尚彦,古川 竜一,北川 修,（JAEA）,深谷 康弘,（検査開発）
発刊日:
公開日:
キーワードタグ:
Power distribution board Power supply circuit for control Tokai reprocessing plant
In order to confine radioactive materials inside the building, buildings, hot-cells and vessels are maintained at a lower air pressure than the atmospheric environment in Tokai Reprocessing Plant. For this purpose, air exhausters are continuously operated. However, during the periodic maintenance of the electric substation in September 2011, the incident in which the vessel ventilation including the spare machine of the highly radioactive liquid waste storage tank have not been started. In this paper, the c...
英字タイトル:
Improving the safety of the power supply system by separating the power supply circuit for control in the power distribution board in Tokai reprocessing plant
英字タイトル:
Improving the safety of the power supply system by separating the power supply circuit for control in the power distribution board in Tokai reprocessing plant
第16回
東海再処理施設 高放射性廃液貯槽の廃液攪拌用三方弁等交換時における作業員の被ばく低減対策
著者:
礒崎 尚彦,森本 憲次,古川 竜一,坪井 雅俊,矢田 祐士,三好 竜太,内田 豊実,（JAEA）,池澤 和美,（新生テクノス）,黒澤 健二,（E＆Eテクノサービス）
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Highly active liquid waste maintenance of pulsation valve Reduction of radiation exposure
礒崎 尚彦,森本 憲次,古川 竜一,坪井 雅俊,矢田 祐士,三好 竜太,内田 豊実,（JAEA）,池澤 和美,（新生テクノス）,黒澤 健二,（E＆Eテクノサービス）
発刊日:
公開日:
キーワードタグ:
Highly active liquid waste maintenance of pulsation valve Reduction of radiation exposure
Highly active liquid waste, which is generated by the reprocessing of spent nuclear fuel, is stored in storage tank of Tokai Reprocessing Plant until it is vitrified. The waste solution in the tank is periodically agitated to avoid the precipitation of insoluble residues during the storage. Three way valves and ball valves have been located at the tank for agitation. Radiation dose rate at the valve location is high and operator’s radiation exposure become a problem. Therefore, measures to reduce radiation ...
英字タイトル:
Dose reduction measure in exchange work of valves used for agitation of highly active liquid waste in storage tank
英字タイトル:
Dose reduction measure in exchange work of valves used for agitation of highly active liquid waste in storage tank
第17回
東海再処理施設における津波による漂流物の影響評価
著者:
西野 紗樹,坪井 雅俊,岡田 純平,三枝 祐,大森 一樹,安尾 清志,瀬下 和芳,堂村 和幸,山本 昌彦,（JAEA）
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Decommissioning risk reduction Safety countermeasure Tokai Reprocessing Plant Tsunami debris
西野 紗樹,坪井 雅俊,岡田 純平,三枝 祐,大森 一樹,安尾 清志,瀬下 和芳,堂村 和幸,山本 昌彦,（JAEA）
発刊日:
公開日:
キーワードタグ:
Decommissioning risk reduction Safety countermeasure Tokai Reprocessing Plant Tsunami debris
Tokai Reprocessing Plant (TRP) is implementing its decommissioning activities based on the decommissioning plan approved by Nuclear Regulation Authority (NRA). In the decommissioning, safety countermeasure against earthquakes and tsunamis is a top priority matter, especially for High Active liquid Waste facility (HAW) and Tokai Vitrification Facility (TVF), which handle highly radioactive liquid waste with high safety risks.
This study focuses on the immediate tsunami countermeasures among the other safety ...
英字タイトル:
Evaluation of Tsunami debris impact on Tokai Reprocessing Plant
英字タイトル:
Evaluation of Tsunami debris impact on Tokai Reprocessing Plant