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

Speaker

Mr Narakhan Khunsrimek (chulalongkorn university)

Description

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)

Co-authors

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