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Séminaire présenté par le Dr Teruhiko KUGO

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Introduction of uncertainty evaluation in reactor core design study - Application for FR and ADS -

Dr Teruhiko KUGO
(Japan Atomic Energy Agency, Tokaimura, Japan)

Mercredi 10 Septembre 2008 à 16h00

Salle de Visioconférences, Bât. 25.
IPHC, 23 rue du Loess, Strasbourg-Cronenbourg

Résumé :

In the lecture will be presented the following subjects :

1. Theoretical approach of uncertainty evaluation of neutronic characteristics Basic ideas are introduced to evaluate the uncertainty in neutronic characteristics. The theoretical method how to evaluate uncertainty due to cross sections will be shown by using sensitivity coefficients and covariance data. Sensitivity analysis based on generalized perturbation theory is introduced. (Sensitivity analysis based on GPT can be omitted.)

2. Application of uncertainty evaluation of neutronic characteristics for FR and ADS As practical cases, uncertainty evaluation results are shown for a MA-loaded fast reactor core and an accelerator driven system with use of JENDL-3.3.

3. Improvement of prediction accuracy Uncertainty evaluation methods (cross section adjustment method, bias factor methods) to improve prediction accuracy with use of integral experimental data are introduced. Uncertainty evaluation results with use of the above methods are shown together with discussion of impact of expected integral experiments using MA-bearing fuel on the prediction accuracy improvement.

Personne à contacter :

Sandrine COURTIN