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タイトル環境モニタリングデータとWSPEEDIコードで逆算した福島第一原子力発電所事故時ソースタームの131I/137Cs比を用いた事故後期の131I及び137Cs放出挙動に関する考察
翻訳タイトルExamination of 131I and 137Cs releases during late phase of Fukushima Daiichi NPP accident by using 131I/137Cs ratio of source terms evaluated reversely by WSPEEDI code with environmental monitoring data
情報提供機関Taylor & Francis
著者日高 昭秀
著者横山 裕也
掲載日2017-08
言語eng
ページ数819p.-829p.
種別report
内容記述To clarify what happened during the Fukushima accident, the phenomena within RPV and the discussion of ties with the environmental monitoring are very important. However, the previous study has not necessarily advanced until the present that passed almost six years from the accident. The present study investigated 131I and 137Cs release behaviors during the late phase of the accident based on 131I/137Cs ratio of the source terms that were recently evaluated backward by WSPEEDI code based on environmental monitoring data. The 131I release from the contaminated water in the basement of 1F2 and 1F3 reactor buildings was evaluated to be about 10% of 131I source term. The increase in 137Cs release from March 21 to 23 and from March 30 to 31 could be explained by the release of CsBO2 which is formed as a result of chemical reactions of Cs with B4C due to re-ascension of the core temperature caused by slight shortage of the core cooling water.
情報源JOPSS関連URL関連URL
関連するサイト
基礎・基盤研究全体マップ(2021)
時間軸情報:燃料デブリ取り出し
時間軸情報:PCV/RPV/建屋の解体
URIhttps://f-archive.jaea.go.jp/dspace/handle/faa/211366