PINEX II - French Contribution to an International Benchmark Experiment

摘要

The aim of the PINEX-2 experiment was to demonstrate that it was possible to delay the failure threshold of an irradiated fuel pin during an overpower transient assuming a particular design of the pin. The preirradiation calculations were conducted with the mixed oxyde fuel reference code COREF 1. The transient thermal and mechanical calculations were performed with a special version of the PHYSURA IA code, using the COREF 1 results as input data. Although PHYSURA is made of simple models, it is able to interpret correctly a complex experiment like PINEX 2. Indeed, it has been established: a good agreement with thermal experimental results, a good agreement between calculated and experimental fuel redistribution out of the fissile zone and an agreement with experiment on clad rupture analysis. (Atomindex citation 11:525381)