分配係数統計データの不確さ低減に関する検討(I) : データのばらつき要因と取捨選択 Moderation of Uncertainty in a Database of Sorption Coefficients (I) : Factors Drawing the Scatter in Database and Data Selection

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著者

    • 大江 俊昭 OHE Toshiaki
    • 東海大学 工学部 エネルギー工学科 Department of Energy Science and Engineering, School of Engineering, Tokai University
    • 長崎 晋也 NAGASAKI Shinya
    • 東京大学大学院 工学系研究科 原子力専攻 Nuclear Professional School, Graduate School of Engineering, The University of Tokyo
    • 木村 英雄 [他] KIMURA Hideo
    • 日本原子力研究開発機構 安全研究センター 廃棄物・廃止措置安全評価研究グループ Waste Disposal & Decommissioning Safety Research Group, Nuclear Safety Research Center, Japan Atomic Energy Agency
    • 武田 聖司 TAKEDA Seiji
    • 日本原子力研究開発機構 安全研究センター 廃棄物・廃止措置安全評価研究グループ Waste Disposal & Decommissioning Safety Research Group, Nuclear Safety Research Center, Japan Atomic Energy Agency
    • 関岡 靖司 SEKIOKA Yasushi
    • 日本原子力研究開発機構 安全研究センター 廃棄物・廃止措置安全評価研究グループ Waste Disposal & Decommissioning Safety Research Group, Nuclear Safety Research Center, Japan Atomic Energy Agency
    • 加藤 博康 KATO Hiroyasu
    • 三菱マテリアル(株)エネルギー事業センター 地下環境システム部 Energy Project & Technology Center, Mitsubishi Materials Corporation

抄録

  Scatter of data found in a sorption database may bring about possible risk dilution in the result drawn by the probabilistic safety analysis unless inappropriate data were carefully examined and excluded if necessary. To reduce such scatter, the advantage of data analysis by adopting theoretical sorption models was demonstrated. The sorption coefficients (<i>K</i><sub>d</sub>) of various combinations of bentonite, minerals and rocks with elements in the database were examined at first to extract the data sets that have enough information for the analysis using the mechanistic sorption models such as the ion exchange and the surface complexation. The <i>K</i><sub>d</sub> of Cs on bentonite was selected as an example and the factors dominating the data scatter were found to be the concentrations of Cs and coexisting ions. The procedure to estimate the parameters that were not given in the database, such as the selectivities of ion exchange reactions among Cs and coexisting ions, and the cation exchange capacity were also suggested to assist in the model analysis. Although the <i>K</i><sub>d</sub> of Cs varied in several orders of magnitude, the scatter could be reduced within the same order of magnitude after appropriate interpretation of the reason for the scatter and data selection.<br>

収録刊行物

  • 日本原子力学会和文論文誌 = Transactions of the Atomic Energy Society of Japan  

    日本原子力学会和文論文誌 = Transactions of the Atomic Energy Society of Japan 7(3), 194-209, 2008-09-01 

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10021307521
  • NII書誌ID(NCID)
    AA11643165
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13472879
  • NDL 記事登録ID
    9629329
  • NDL 雑誌分類
    ZN36(科学技術--原子力工学・工業)
  • NDL 請求記号
    Z74-C788
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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