BEHAVlOR OF A UF6 CONTAINER IN A FIRE : MODELLING AND VALIDATION WITH DIBONA CODE

The purpose of this study is to predict the thermohydraulic behaviour of a UF6 container in a fire. The coupling of the thermal model with the mechanical model must be considered to defme if the resistance of a 48Y container can be guaranteed. To answer this question a 20 model using the fmite elements code Ansys was developed. The scenario and the phenomenology have been introduced in the model from the analysis and the interpretation of the Tenerife tests. This model is validated with 3 tests of the Tenerife program (TEN2, TEN4, TEN6). In the whole, the numerical results correlated successfully with the experiments. The extrapolation to a IAEA fire test on 48Y container is presented at the end of this document.