Modelling of Nuclear Fuel under Accident Conditions by means of TRANSURANUS


Modelling of Nuclear Fuel under Accident Conditions by means of TRANSURANUS

van Uffelen, P.; van de Laar, J.; Schubert, A.; Di Marcello, V.; Vlahovic, L.; Holt, L.

The TRANSURANUS fuel performance code, which is developed at the JRC-ITU and in collaboration with many partner institutes since more than three decades, has been adapted in order to be able to simulate design basis accident (DBA) conditions.

In a first step, the developments and associated validation work will be summarised for LOCA conditions. This part includes modifications in the model for large strains, for the crystallographic phase transition in zircaloy, and for burst release and large cladding deformations.

In a second step, the ongoing work for simulations of RIA conditions will be outlined that include the model for the plenum temperature, along with the separate effect studies and detailed model developments made in parallel by means of multi-scale and multi-physics tools for the high burnup structure.

Finally, the perspectives of model developments and needs for further verification and validation in the frame of international benchmark exercises dedicated to DBA simulations and the first phase of a sever accident, i.e. when the cylindrical fuel rod geometry is preserved, will be presented for discussion.

  • Contribution to proceedings
    Technical meeting on modelling of water-cooled fuel including design basis and severe accidents, 28.10.-01.11.2013, Chengdu, China
    Proceedings of the technical meeting on modelling of water-cooled fuel including design basis and severe accidents
  • Lecture (Conference)
    Technical meeting on modelling of water-cooled fuel including design basis and severe accidents, 28.10.-01.11.2013, Chengdu, China

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Publ.-Id: 19419