Estudio del papel de la Studtita en condiciones de un repositorio. Estabilidad, reactividad y procesos de coprecipitación

Nuclear fuel is made by UO2 enrichment in U235 (3 5 %), the fission of U235 modified the chemical composition, generating fission product, actinides and activation products.Also, it is observed microstructural modifications like defects, bubbles, cracks and segregation of metallic and ceramic phases. Spent nuclear Fuel SF has γ, β and α emisors, the total activity will depend on their irradiation history, burn - up and cooling time (Astudillo Pastor, 2001; Quiñones et al., 2003). Any environmental assessment of SF disposal requires a prediction of the radionuclides release from SF matrix when its matrix will be in contact with groundwater (Corbel et al., 2006).