Japan Atomic Energy Agency (JAEA) established the thermodynamic database (JAEA-TDB) for performance assessment of geological disposal of high-level radioactive waste (HLW) and TRU waste. Twenty-five elements which were important for the performance assessment of geological disposal were selected for the database. JAEA-TDB enhanced reliability of evaluation and estimation of their solubility through selecting the latest and the most reliable thermodynamic data at present. We evaluated and estimated solubility of the 25 elements in the simulated porewaters established in the “Second Progress Report for Safety Assessment of Geological Disposal of HLW in Japan” using the JAEA-TDB and compared with those using the previous thermodynamic database (JNC-TDB). It was found that most of the evaluated and estimated solubility values were not changed drastically, but the solubility and speciation of dominant aqueous species for some elements using the JAEA-TDB were different from those using the JNC-TDB. We discussed about how to provide reliable solubility values for the performance assessment.
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ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management
October 3–7, 2010
Tsukuba, Japan
Conference Sponsors:
- Nuclear Engineering Division and Environmental Engineering Division
ISBN:
978-0-7918-5453-2
PROCEEDINGS PAPER
Evaluated and Estimated Solubility of Some Elements for Performance Assessment of Geological Disposal of High-Level Radioactive Waste Using Updated Version of Thermodynamic Database Available to Purchase
Akira Kitamura,
Akira Kitamura
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
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Reisuke Doi,
Reisuke Doi
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
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Yasushi Yoshida
Yasushi Yoshida
Inspection Development Co. Ltd., Tokai, Ibaraki, Japan
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Akira Kitamura
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
Reisuke Doi
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
Yasushi Yoshida
Inspection Development Co. Ltd., Tokai, Ibaraki, Japan
Paper No:
ICEM2010-40172, pp. 365-373; 9 pages
Published Online:
April 5, 2011
Citation
Kitamura, A, Doi, R, & Yoshida, Y. "Evaluated and Estimated Solubility of Some Elements for Performance Assessment of Geological Disposal of High-Level Radioactive Waste Using Updated Version of Thermodynamic Database." Proceedings of the ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 2. Tsukuba, Japan. October 3–7, 2010. pp. 365-373. ASME. https://doi.org/10.1115/ICEM2010-40172
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