4-6 February 2019
Centara Grand at Central Ladprao
Asia/Bangkok timezone
Deadline for full paper revision: 21 May 2019.

Influence of the High Burnup Structure Modelling on the Fuel Rod Failure Simulation

5 Feb 2019, 14:40
1h 10m
Centara Grand at Central Ladprao

Centara Grand at Central Ladprao

Chatuchak, Bangkok 10900, Thailand
Poster Safety Poster 2


Mr Narakhan Khunsrimek (chulalongkorn university)


The fuel burnup is a key factor influencing the energy production of a nuclear power plant. In order to improve the economic efficiency of a power plant, increase of fuel burnup is needed. The change of oxide fuel thermo-mechanical properties during irradiation is well known and could be accurately simulated if a fuel burnup does not exceed the value 65 GWd/MTU. Otherwise, high burnup structure (HBS) phenomenon appears, which must be taken into account in a simulation. In order to check the effect of HBS on a fuel rod behaviour and failure simulation, the IFA-432 benchmark has been calculated by the FRAPCON fuel performance code. There are two built-in gas release models in the code: the Massih model and FRAPFGR model, that includes the influence of HBS effects. The calculations are conducted for each model. The calculation results show a large difference of the total fission gas release between two models. Also, it was confirmed that the presence of HBS has an impact on a fuel rod damage due to a failure accident.

Primary author

Mr Narakhan Khunsrimek (chulalongkorn university)


Dr Cherezov Alexey (Ulsan National Institute of Science and Technology) Dr Somboon Rassame (Chulalongkorn University) Prof. Lee Deokjung (Ulsan National Institute of Science and Technology)

Presentation Materials