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Radionuclide Release Behavior of Light Water Reactor Spent Fuel Under Hydrothermal Conditions

Published online by Cambridge University Press:  28 February 2011

William L. Neal ,
Shirley A. Rawson  and
William M. Murphy
William L. Neal
Affiliation:
Westinghouse Hanford Company, P.O. Box 1970, Richland, WA 99352
Shirley A. Rawson
Affiliation:
Westinghouse Hanford Company, P.O. Box 1970, Richland, WA 99352
William M. Murphy
Affiliation:
Westinghouse Hanford Company, P.O. Box 1970, Richland, WA 99352
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Abstract

The Basalt Waste Isolation Project has performed initial characterization of the release behavior of radionuclides from ATM-101 spent fuel reacted under hydrothermal conditions. Results to date indicate that 1) 14C, 90Sr, 129I, and 137Cs exhibit preferential release to solution relative to the actinides, 2) 239+240Pu, 241Am, and 244Cm ratios in solution are consistent with stoichiometric dissolution of the spent fuel matrix, whereas uranium concentrations are higher than those predicted for stoichiometric dissolution, 3) 137Cs release varies as a function of the fluid to solid mass ratio, and 4) 14C, 129I, and 137Cs release is affected by fuel particle size and/or fuel washing.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 112: Symposium P – Scientific Basis for Nuclear Waste Management XI , 1987 , 505
Copyright
Copyright © Materials Research Society 1988

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