Analysis for the ARIANE GU1 sample: Nuclide inventory and decay heat

The present study provides a detailed analysis of the calculations 50 isotopic compositions for Post Irradiation Examination sample GU1 from ARIANE program. Two types approach are performed: lattice (2 dimensional) and full core (3 calculations. In case calculations, effect oflocation is also studied. Different code versions (for CASMO5 SNF) used in order to contribute validation work specific calculation schemes assess impact nuclear data libraries as well. effects quantified cross sections, spectra fission yields, together with their partial contributions. It concluded that consideration mass balance, uncertainties, well uncertainties operational conditions manufacturing tolerances help obtaining consistency between calculated measured concentrations. This then complemented decay heat assembly interest, consistent PIE study. indicates that, without considering geometrical deformation due long storage time, still main source uncertainties. Expanded (including biases, experimental uncertainties) finally proposed both heat.