幌延泥岩に対する分配係数設定手法; 熱力学的収着モデルと半定量的推定手法の適用性

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Author: Ochs, M.ほか

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Publication date: 2013-03

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Note (General)：: JAEA has developed the setting approaches of sorption parameter (Kd) for site-specific conditions, to derive reliable parameter for performance assess...

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Summary, etc.：: JAEA has developed the setting approaches of sorption parameter (Kd) for site-specific conditions, to derive reliable parameter for performance assess...

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Material Type: 文書・図像類
Title: 幌延泥岩に対する分配係数設定手法; 熱力学的収着モデルと半定量的推定手法の適用性
Author/Editor: Ochs, M.
舘幸男
Trudel, D.
陶山忠宏
Author Heading: Ochs, M.
舘幸男
Trudel, D.
陶山忠宏
Publication Date: 2013-03
Publication Date (W3CDTF): 2013-03
Alternative Title: Kd setting approaches for Horonobe mudstone systems; Applications of TSMs and semi-quantitative estimation procedures
Periodical title: JAEA-Research 2012-044
Text Language Code: eng
Target Audience: 一般
Note (General): JAEA has developed the setting approaches of sorption parameter (Kd) for site-specific conditions, to derive reliable parameter for performance assessment (PA) of geological disposal. These approaches include any transferring procedures from experimental conditions to PA conditions through expert judgments, semi-quantitative estimation procedures and thermodynamic sorption models (TSMs). The present report focused on illustrating a range of example calculations regarding the derivation of Kd values and their uncertainties based on semi-quantitative estimation procedures and TSMs. The Kd values of four key radionuclides, Cs, Ni, Am and Th were derived for Horonobe mudstone systems. These Kd-setting exercises allowed to estimate the magnitude of sorption under the site-specific conditions, and to identify some critical gaps in the existing data and process understanding. The possibilities of extending such approaches to further rock types including granitic rocks were also discussed.
地層処分性能評価における信頼性の高いパラメータ設定に資するため、原子力機構では具体的な地質環境条件に対する収着パラメータ(Kd)の設定手法の開発を進めている。この設定において、実験条件から性能評価条件におけるKdを評価するため、専門家の判断、半定量的推定手法、熱力学的収着モデルといった条件変換手法が重要となる。本報告では、半定量的推定手法、熱力学的収着モデルを用いたKd設定と不確実性評価を、具体的な設定を試行しつつ検討した。対象とした系は、複数の幌延泥岩環境に対するCs, Ni, Am, Thの4核種のKd設定である。本検討を通じ、実際の環境条件に対する分配係数設定手法を提示することができ、同時に、既存のデータや現象理解に関する重要な課題を抽出することができた。さらに、これら分配係数設定手法を、花崗岩など他の岩種に適用する際の課題についても議論された。
Source: /JAEA-Research-2012-044.pdf （fulltext）
https://jopss.jaea.go.jp/pdfdata/JAEA-Research-2012-044.pdf
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 日本原子力研究開発機構 : JOPSS:JAEA Originated Papers Searching System