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Measures of Geologic Isolation

Published online by Cambridge University Press:  17 March 2011

William M. Murphy
William M. Murphy*
Affiliation:
Department of Geological and Environmental Sciences, California State University, Chico Chico, CA 95929-0205 USA; [email protected]
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Abstract

Isolation in a geologic setting has been the generally favored solution to the high-level radioactive waste (HLW) problem since a scientific basis for nuclear waste management began to be formulated over half a century ago. Although general features of suitable settings have been enumerated, quantitative measures of the safety of geologic isolation of HLW are challenging to devise and to implement. Some regulatory measures of isolation for the proposed repository at Yucca Mountain, Nevada, have be devised and revised involving considerations of global releases, groundwater travel time, and time and space scales for isolation. In current Yucca Mountain specific regulations, the measure of long-term safety hinges on probabilistic estimates of radiation doses to the average member of a maximally exposed group of people living about 18 km down the groundwater flow gradient within 10,000 years after permanent closure of the repository. From another perspective, hydrogeochemical studies provide quantitative measures of system openness and the ability of geologic systems to isolate HLW. Hydrogeochemical data that bear on geologic isolation of HLW at Yucca Mountain include precipitation of radionuclides in stable mineralogical products of spent fuel alteration, ages of natural secondary mineralization in the mountain, uranium decay-series isotopic data for system openness, bomb-pulse isotope occurrences, and ambient carbon-14 distributions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 824: Symposium CC – Scientific Basis for Nuclear Waste Management XXVIII , 2004 , CC3.5
Copyright
Copyright © Materials Research Society 2004

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References

[1] National Research Council, A Study of the Isolation Systems for Geologic Disposal of Radioactive Waste (National Academy Press, Washington, DC, 1983).Google Scholar
[2] International Atomic Energy Agency, Scientific and Technical Basis for Geological Disposal of Radioactive Wastes (IAEA, Vienna, 2003).Google Scholar
[3] National Research Council, Technical Bases for Yucca Mountain Standards (National Academy Press, Washington, DC, 1995).Google Scholar
[4] Department of Energy, Environmental Impact Statement for a Geologic Repository for the Disposal of Spent Nuclear Fuel and High-Level Radioactive Waste at Yucca Mountain, Nye County, Nevada (DOE/EIS-0250, 2002).Google Scholar
[5] Flint, A. L., Flint, L. E., Bodvarsson, G. S., Kwicklis, E. M., Fabryka-Martin, J. T., J. Hydrology 247, 1 (2001).Google Scholar
[6] Murphy, W. M. and Pearcy, E. C., in Scientific Basis for Nuclear Waste Management XV, ed. Sombret, C. (Mater. Res. Soc. Proc. 257, Warrendale, PA, 1992) pp. 521–527.Google Scholar
[7] Wronkiewicz, D. J. and Buck, E. C., in Uranium: Mineralogy, Geochemistry and the Environment, ed. Burns, P. C. and Finch, R. (Min. Soc. Am. Rev. Min. 38, 1999) pp. 475–497.Google Scholar
[8] Finn, P. A., Tsai, Y., and Cunnane, J. C., in Scientific Basis for Nuclear Waste Management (Mater. Res. Soc. Symp. Proc. 713, 2002) pp. 607–614.Google Scholar
[9] Pearcy, E. C., Prikryl, J. D., Murphy, W.M., and Leslie, B.W., Appl. Geochem. 9, 713 (1994).Google Scholar
[10] Chen, F., Ewing, R. C., and Clark, S. B., Amer. Mineral. 84, 650 (1999).Google Scholar
[11] Grenthe, I., Fuger, J., Konings, R. J. M., Lemire, R. J., Muller, A. B., Nguyen-Trung, C., and Wanner, H., Chemical Thermodynamics of Uranium (Elsevier, Amsterdam, 1992).Google Scholar
[12] Moll, H., Geipel, G., Matz, W., Bernhard, G., and Nitsche, H., Radiochim. Acta 74, 3 (1996).Google Scholar
[13] Giammar, D. E. and Hering, J.G., Geochim. Cosmochim. Acta 66, 3235 (2002).Google Scholar
[14] Prikryl, J. D., and Murphy, W. M. (this volume).Google Scholar
[15] Murphy, W. M., Soldavini, S., and Gallagher, C. M. (this volume).Google Scholar
[16] Murphy, W. M. and Codell, R. B., in Scientific Basis for Nuclear Waste Management XXII, ed. Wronkiewicz, D. J. and Lee, J. H. (Mater. Res. Soc. Proc. 556, Warrendale, PA, 1999) pp. 551–558.Google Scholar
[17] Buck, E. C., Fortner, R. J., Finn, P. A., and Bates, J. K., in Scientific Basis for Nuclear Waste Management XXI (Mater. Res. Soc. Symp. Proc. 506, 1998) pp. 87–94.Google Scholar
[18] Fortner, J. A., Finch, R. J., Kropf, A. J., and Cunnane, J. C., in Proc. Int. High Level Rad. Waste Mgmt. (Las Vegas, NV, 2003) pp. 764–771.Google Scholar
[19] Curti, E., Coprecipitation of radionuclides: basic concepts, literature review and first applications (Paul Scherrer Institut 97–10, 1997).Google Scholar
[20] Levy, S. S., in Proc. 2nd Int. Conf. High Level Rad. Waste Mgmt. (Las Vegas, NV, 1991) pp. 477-485.Google Scholar
[21] Paces, J. B., Neymark, L. A., Wooden, J. L., and Persing, H. M., Geochim. Cosmochim. Acta 68, 1591 (2004).Google Scholar
[22] Browning, L., Murphy, W. M., Manepally, C., and Fedors, R., Computers & Geosci. 29, 247 (2003).Google Scholar
[23] Murphy, W. M. and Pickett, D. A., in Scientific Basis for Nuclear Waste Management XXVI (Mater. Res. Soc. Symp. Proc. 713, 2002) pp. 867–874.Google Scholar
[24] Gascoyne, M., Miller, N. H., and Neymark, L. A., Appl. Geochem. 17, 781 (2002).Google Scholar
[25] Pickett, D. A. and Murphy, W. M., in Seventh EC natural analogue working group meeting, ed., Maravic, H. von and Smellie, J. (European Commission, Brussels, 1997) pp. 113–122.Google Scholar
[26] Fabryka-Martin, J. T., Dixon, P. R., Levy, S., Liu, B., Turin, H. J., and Wolfsberg, A. V., LA-UR-96-1384, YMP 3783AD (Los Alamos National Lab, Los Alamos, NM, 1996).Google Scholar
[27] Paces, J. B., Neymark, L. A., Peterman, Z. E., Nimz, G. J., Gascoyne, M., and Marshall, B. D., GSA Abstract 177-1 (2003).Google Scholar
[28] Murphy, W. M., in Scientific Basis for Nuclear Waste Management XXI (Mater. Res. Soc. Symp. Proc. 506, 1998) pp. 407–414.Google Scholar
[29] Yang, I. C., in Proc. 3rd Int. Conf. High Level Rad. Waste Mgmt. (Las Vegas, NV, 1992) pp. 732–737.Google Scholar
[30] Murphy, W. M., in Scientific Basis for Nuclear Waste Management XVIII, ed. Murakami, T. and Ewing, R. C. (Mater. Res. Soc. Symp. Proc. 353, 1995) pp. 419–426.Google Scholar