Solubility Evaluation for Yucca Mountain TSPA-SR

Abstract

A systematic evaluation of radionuclide solubility has been conducted for the Yucca Mountain Project. The conventional thermodynamic approach was employed and geochemical model calculations were used to estimate radionuclide solubilities for the base case. The study uses the computer code EQ3/6 as the major geochemical modeling tool. The water composition and environmental conditions are based on the results of in-package chemistry and in-drift chemistry studies. Field observations, laboratory measurements, and thermodynamic and kinetic considerations are utilized to ensure the resulting solubilities are conservative. Fourteen radioelements have been studied (U, Np, Pu, Th, Am, Ac, Tc, I, C, Cs, Sr, Ra, Pa, and Pb) and their solubilities are presented as either functions of environmental conditions or statistical distributions. An alternative source term model for Np, which was based on measurements of spent fuel dissolution experiments rather than conventional thermodynamic considerations, was also developed. Comparison of it with the Np base case solubility model suggests that it is necessary to advance our understanding about the behaviors of Np during the process of spent fuel corrosion.

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References

  1. 1.

    Y. Chen, A. Loch, T. Wolery, R. Gaylord, and W. Halsey, CRWMS M&O Report ANL-WISMD-000010 REV 01, (2000)

    Google Scholar 

  2. 2.

    Y. Chen, P. Brady, BSC Report CAL-WIS-MD-000012 REV 00, (2001)

    Google Scholar 

  3. 3.

    I. Grenthe, Radiochimica Acta, 52/53, 425–432. (1991)

    Article  Google Scholar 

  4. 4.

    D. Langmuir, Aqueous Environmental Geochemistry, (Prentice Hall, New Jersey, 1997) p.531.

    Google Scholar 

  5. 5.

    T. Wolery, Lawrence Livermore National Laboratory Report UCRL-MA-110662, (1992).

    Google Scholar 

  6. 6.

    T.L. Steinborn, CRWMS M&O Report TDR-NBS-HS-000003 REV 00, (2000).

    Google Scholar 

  7. 7.

    R. Finch, J. Suksi, K. Rasilainen, and R. Ewing, in Scientific Basis for Nuclear Waste Management XXI, edited by W. Murphy and D. Knecht, (Mater. Res. Soc. Proc. 412, Pittsburgh, PA, 1996) pp.823–830.

    CAS  Google Scholar 

  8. 8.

    D. Efurd, W. Runde, J. Banar, D. Janecky et al., Environ. Sci. Technol. 32, pp.3893-3900.

  9. 9.

    H. Nitsche et al., Los Alamos National Laboratory Report LA-12562-MS, (1993).

    Google Scholar 

  10. 10.

    J.M. Cleveland, The Chemistry of Plutonium, (American Nuclear Society, 1979).

    Google Scholar 

  11. 11.

    D. Rai, D. and J. Ryan, Radiochimica Acta, 30, pp.213–216 (1982).

    CAS  Article  Google Scholar 

  12. 12.

    D. Marani et al., Wat. Res., 29, pp.1085–1092, (1995).

    CAS  Article  Google Scholar 

  13. 13.

    J. Berry et al., Analyst, 114, pp. 339–347 (1989).

    CAS  Article  Google Scholar 

  14. 14.

    P. Burns, R. Ewing, and M. Miller, Jour. of Nucl. Mat., 245, pp.1–9, (1997).

    CAS  Article  Google Scholar 

  15. 15.

    E. Buck, R. Finch, P. Finn, and J. Bates, in Scientific Basis for Nuclear Waste Management XXI, edited by I. McKinley and C. McCombie, (Mater. Res. Soc. Proc. 506, Warrendale, PA, 1998) pp.87–94.

    CAS  Google Scholar 

  16. 16.

    P. Finn et al., Radiochimica Acta, 66/67, p. 189–195 (1994).

    CAS  Article  Google Scholar 

  17. 17.

    P. Finn et al., in Scientific Basis for Nuclear Waste Management XX, edited by W. Gray, (Mater. Res. Soc. Proc. 465, Warrendale, PA, 1997), p. 527–534.

    CAS  Google Scholar 

  18. 18.

    P. Finn, CRWMS M&O Report LLYMP0001064, (1999).

    Google Scholar 

  19. 19.

    D. Sassani, and E. Siegmann CRWMS M&O Report B00000000–01717-2200–00191, (1997).

    Google Scholar 

  20. 20.

    J. Bruno et al., Presented at 1998 International Spent Fuel Workshop, Las Vegas, Nevada, 1998.

    Google Scholar 

  21. 21.

    D. Wronkiewicz, E. Buck, J. Bates, in Scientific Basis for Nuclear Waste Management XX, edited by W. Gray, (Mater. Res. Soc. Proc. 465, Warrendale, PA, 1997), p. 519–516.

    CAS  Google Scholar 

  22. 22.

    W.M. Murphy, Geological Society of America 2000 Abstracts, v. 32, no. 7, p. A–291.

    Google Scholar 

  23. 23.

    W. Murphy and R. Codell, in Scientific Basis for Nuclear Waste Management XXII, edited by D. Wronkiewicz and J. Lee, (Mater. Res. Soc. Proc. 556, Warrendale, PA, 1999) pp.551–558.

    CAS  Google Scholar 

  24. 24.

    Y. Chen et al., in Scientific Basis for Nuclear Waste Management XXII, edited by D. Wronkiewicz and J. Lee, (Mater. Res. Soc. Proc. 556, Warrendale, PA, 1999) pp. 471–478.

    CAS  Google Scholar 

  25. 25.

    Y. Chen, in CRWMS M&O Report B00000000–01717-4301–00006 REV 01, (1998).

    Google Scholar 

  26. 26.

    C. Wilson, Pacific Northwest Laboratory Report PNL-7169, (1990).

    Google Scholar 

  27. 27.

    C. Wilson, Pacific Northwest Laboratory Report PNL-7170, (1990).

    Google Scholar 

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Chen, Y., Loch, A.R., Wolery, T.J. et al. Solubility Evaluation for Yucca Mountain TSPA-SR. MRS Online Proceedings Library 713, 104 (2001). https://doi.org/10.1557/PROC-713-JJ10.4

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