Deterministic model of PWR fast fluence for uncertainity propagations with the code APOLLO3 - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Accéder directement au contenu
Chapitre D'ouvrage Année : 2017

Deterministic model of PWR fast fluence for uncertainity propagations with the code APOLLO3

Résumé

The fast neutron fluence and the corresponding uncertainty are important parameters for reactor pressure vessel life time. This article presents one model, under development at CEA (Commissariat a l-Energie Atomique et aux Energies Alternatives), to carry out with the deterministic code APOLLO3$^R$ uncertainty calculations of the fast fluence for PWR irradiation surveillance. All calculations are made by MINARET, a 3D-SN solver of the APOLLO3 code which uses the discontinuous Galerkin finite elements approximation. The spatial mesh is unstructured and the transport calculations are parallelized with respect to the angular directions. In this numerical scheme, the multigroup cross-sections are sub-group self-shielded and collapsed over a dedicated energy mesh optimized by the Adaptive Energy Mesh Constructor (AEMC). Results from this model are encouraging with respect to the Monte Carlo reference TRIPOLI-4$^R$. The integral of the flux over 1 MeV in the locations of interest (surveillance capsule and vessel) is calculated in less than 20 minutes with an error lower than 1percent. Some examples of uncertainty calculations associated to design parameters in which the MINARET solver is coupled to the CEA uncertainty and sensitivity platform URANIE are also provided.
Fichier principal
Vignette du fichier
201700002687.pdf (1.39 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

cea-02421728 , version 1 (20-12-2019)

Identifiants

Citer

P. Mosca, L. Clouvel, T. Lacaze, S. Lahaye, J.-J. Lautard, et al.. Deterministic model of PWR fast fluence for uncertainity propagations with the code APOLLO3. Mary Helen Sparks; K. Russell DePriest; David W. Vehar. Reactor Dosimetry - 16th International Symposium (STP 1608), 1608, ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-295, pp.446-457, 2017, 978-0-8031-7661-4. ⟨10.1520/STP160820170048⟩. ⟨cea-02421728⟩

Collections

CEA DEN
21 Consultations
122 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More