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Conference Article: The Atlas HTR Fuel Simulation Code Objectives, Description And First Results

Mayeul Phélip, Guy Degeneve, CEA Cadarache, St. Paul Lez Durance, FRANCE; Frédéric Michel, Michel Pelletier, CEA Cadarache, St Paul Lez Durance, FRANCE; Pierre Guillermier, FRAMATOME ANP Fuel Sector, Lyon Cedex , FRANCE

Abstract

CEA, in partnership with FRAMATOME ANP is developing the ATLAS (Advanced Thermal mechanicaL Analysis Softfware) code with the following objectives:

To quantify the failed particle fraction of a loading in normal and accidental conditions. Results will be directly used to fulfil the failure fraction requirements coming from safety analysis.
To evaluate the fission product released fraction of a loading in normal and accidental conditions. Results will be input data for fission products transport codes.

The V1.0 ATLAS version, which constitutes the basis of the code, has been developed within the 5th European Framework Programme. Using a finite element method, this preliminary version allows to perform thermal and mechanical calculations of a full particle, in which kernel, buffer and coating behaviour under irradiation are calculated. Calculations coming from the 6th Co-ordinated Research Program benchmark are presented.

view the full text of this article (10 pages, format: PDF, size= 516kB)

key words: Fuel; particle; behaviour; irradiation; simulation

Reference:: Proceedings of the Conference on High Temperature Reactors, Beijing, China, September, 22-24, 2004; International Atomic Energy Agency, Vienna (Austria); HTR-2004, pp:1-10