Models for the corrosion of spent nuclear fuel (fission and actinide-doped uranium dioxide) provide the essential source term for the release of radionuclides from within a failed nuclear waste container in a deep geologic repository. Although redox conditions within a repository are expected to be anoxic, exposure of the fuel to groundwater will cause the generation of oxidants at the fuel surface, leading to its corrosion and the release of radionuclides. The influence of these oxidants will be partially mitigated by the anoxic corrosion of the inner walls of the steel container to produce the oxidant scavengers, Fe2+ and H2. This review summarizes the development of a finite element model developed to determine the influence of the various redox-controlling species (H2O2, Fe2+, H2). Both one-dimensional and two-dimensional models are described, with the latter required to take into account the fractured geometry of the fuel.
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1 March 2019
Research Article|
June 22 2018
Predicting Radionuclide Release Rates from Spent Nuclear Fuel Inside a Failed Waste Disposal Container Using a Finite Element Model Available to Purchase
Nazhen Liu;
Nazhen Liu
‡
*Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada.
**Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
‡Corresponding author. E-mail: [email protected].
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Ziyan Zhu;
Ziyan Zhu
*Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada.
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Linda Wu;
Linda Wu
*Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada.
***Canadian Nuclear Laboratories, Chalk River, Ontario K0J 1J0, Canada.
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Zack Qin;
Zack Qin
*Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada.
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James J. Noël;
James J. Noël
*Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada.
****Surface Science Western, The University of Western Ontario, London, Ontario N6G 0J3, Canada.
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David W. Shoesmith
David W. Shoesmith
*Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada.
****Surface Science Western, The University of Western Ontario, London, Ontario N6G 0J3, Canada.
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‡Corresponding author. E-mail: [email protected].
Online ISSN: 1938-159X
Print ISSN: 0010-9312
© 2019, NACE International
2019
CORROSION (2019) 75 (3): 302–308.
Citation
Nazhen Liu, Ziyan Zhu, Linda Wu, Zack Qin, James J. Noël, David W. Shoesmith; Predicting Radionuclide Release Rates from Spent Nuclear Fuel Inside a Failed Waste Disposal Container Using a Finite Element Model. CORROSION 1 March 2019; 75 (3): 302–308. https://doi.org/10.5006/2866
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