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Título:	Instant release fraction corrosion studies of commercial UO2 BWR spent nuclear fuel
Autor/a:	Martínez Torrents, Albert; Serrano Purroy, Daniel; Sureda, R.; Casas Pons, Ignasi; Pablo Ribas, Joan de
Otros autores:	Universitat Politècnica de Catalunya. Departament d'Enginyeria Química; Universitat Politècnica de Catalunya. SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials
Abstract:	The instant release fraction of a spent nuclear fuel is a matter of concern in the performance assessment of a deep geological repository since it increases the radiological risk. Corrosion studies of two different spent nuclear fuels were performed using bicarbonate water under oxidizing conditions to study their instant release fraction. From each fuel, cladded segments and powder samples obtained at different radial positions were used. The results were normalised using the specific surface area to permit a comparison between fuels and samples. Different radionuclide dissolution patterns were studied in terms of water contact availability and radial distribution in the spent nuclear fuel. The relationship between the results of this work and morphological parameters like the grain size or irradiation parameters such as the burn-up or the linear power density was studied in order to increase the understanding of the instant release fraction formation.
Materia(s):	-Àrees temàtiques de la UPC::Enginyeria química -Nuclear power plants -Centrals nuclears
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Tipo de documento:	Artículo - Borrador Artículo
Editor:	Elsevier
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