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Chemical Implications of Heat and Radiation Damage to Rock Salt

Published online by Cambridge University Press:  26 February 2011

Larry R. Pederson
Larry R. Pederson*
Affiliation:
Pacific Northwest Laboratory, P. O. Box 999, Richland, WA 99352
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Abstract

Chemical changes induced in Palo Duro and Paradox Basin natural rock salts and in synthetic NaCl by heat and gamma radiation were investigated. Heating of unirradiated natural rock salts to 300°C resulted in HCI (most prevalent), SO2, CO2, and H2S evolution, and increased the base content of the remaining salt by not more than 10 microequivalents per gram; whereas, heating of synthetic NaCI gave no product. Gamma irradiation produced sodium colloids and neutral chlorine in amounts similar to the results of Levy and coworkers. When the irradiated salts were heated, three reactions were apparent: (1) radiation-induced defects recombined; (2) neutral chlorine was evolved; and (3) HCl, SO2, CO2, and H2S were evolved, similar to results for unirradiated salts. Because reaction (1) appeared to dominate over reaction (2), it is expected that the influence of radiation damage to salt on the near-field chemical environment will be minor.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 44: Symposium N – Scientific Basis for Nuclear Waste Management VIII , 1984 , 701
Copyright
Copyright © Materials Research Society 1985

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References

1. Sonder, E. and Sibley, W.A., Point Defects in Solids, ed. Crawford, J.H. and Slifkin, A., Plenum, New York, 1971, p. 201.Google Scholar
2. Clark, C.D. and Crawford, J.H., Adv. Phys. 22, 117 (1973).Google Scholar
3. Hobbs, L.W., J. Physique Colloq. 34, C9 (1973).Google Scholar
4. Klaffky, R.W., Swyler, K.T. and Levy, P.W., in: Proceedings of Conf. on Ceramics in Nuclear Waste Management, eds. Chikalla, T.D. and Mendel, J.E., p. 310. CONF-790430, U.S. Department of Energy, Washington, DC (1979).Google Scholar
5. Levy, P.W., Swyler, K.T. and Klaffky, R.W., J. de Physique, 41, Supplement Colloque 16, 344 (1980).Google Scholar
6. Levy, P.W. and Kierstead, J.A., Very Rough Preliminary Estimate of Sodium Metal Colloid-Induced in Natural Rock Salt by the Radiations from Radioactive Waste Canister. BNL-32004, Brookhaven National Laboratory, Upton, New York (1982).Google Scholar
7. Levy, P.W., Nuclear Technology 60, 126 (1983).Google Scholar
8. Levy, P.W., Lommen, T.M. and Kierstead, J.A., in: Radiation Effects in Insulators, eds. Arnold, G.W. and Borders, J.A., p. 549 (1984).Google Scholar
9. Jain, U. and Lidiard, A.B., Phil. Mag. 35, 245 (1977).Google Scholar
10. Jenks, G.H., Sonder, E., Bopp, C.D., Walton, J.R. and Lindenbaum, S., J. Phys. Chem. 78, 871 (1975).Google Scholar
11. Jenks, G.H. and Bopp, C.D., Storage and Release of Radiation Energy in Salt in Radioactive Waste Repositories. ORNL-5058, Oak Ridge National Laboratory, Oak Ridge, TN (1977).Google Scholar
12. Panno, S.V. and Soo, P., Nucl. Technol. 67, 268 (1984).Google Scholar
13. Pederson, L.R., Clark, D.E., Hodges, F.N., McVay, G.L. and Rai, D., in: Scientific Basis for Nuclear Waste Management VII, ed McVay, G. L., North-Holland, New York, p. 417 (1984).Google Scholar
14. Weber, W.J., Pederson, L.R., Gray, W.J. and McVay, G.L., Nucl. Inst. Meth. 229, 527 (1984).Google Scholar
15. Uerpmann, P. and Jockwer, N., in: Geochemical Processes, Nuclear Energy Agency, OECD, Paris, p. 93 (1982).Google Scholar
16. Jockwer, N., in: Scientific Basis for Nuclear Waste Management VII, ed McVay, G. L., North-Holland, New York, p. 17 (1984).Google Scholar
17. Morris, J.C., J. Phys. Chem. 70, 3798 (1966).Google Scholar
18. Office of Nuclear Waste Isolation, Waste Package Reference Conceptual Designs for a Repository in Salt. ONWI-517, Battelle Memorial Institute, Columbus, OH (1985).Google Scholar