PuMMA blind benchmark: Performance of high plutonium content MOX fuel under irradiation

D. Jaramillo-Sierra, M. Stefanowska-Skrodzka, J. Lavarenne, E. Deveaux, E. Brunetto, V. Matocha, A. Magni, K. Sturm, K. Mikityuk, Y. Wang, A. Jiménez-Carrascosa, J. Gado, B. Burger, V. Blanc, V. Dupont, L. Argeles, B. Perrin, G. Michel, A. Scolaro, C. FiorinaJussi Peltonen, A. Del Nevo*, L. Luzzi, D. Pizzocri, S. Lemehov, S. Bebjak, T. Chrebet, C. Strmensky

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

This paper presents the results of the first phase of the benchmark exercise in the PuMMA project, aimed at extending the reliability of fuel performance codes for Mixed Oxide (MOX) fuels with high plutonium content. The exercise involved the simulation of three irradiation experiments: (1) CAPRIX (45 % of Pu) carried out in the PHENIX reactor in France, (2) TRABANT1 (45 % of Pu) and (3) TRABANT2 (40 % of Pu) irradiated in the HFR reactor in The Netherlands. Thirteen organizations from nine countries participated, using eight different fuel performance codes. In this phase, besides the fuel specifications, boundary conditions such as linear heat rate, irradiation history, and cladding external temperature were provided. In a “blind” exercise, all codes were free to choose suitable models and correlations for the simulation without access to the experimental results. The main results of the “blind” phase are performed along with a sensitivity analysis to investigate the impact of various uncertainties on measurements, irradiation and input parameters. Significant discrepancies were observed among the different codes, attributed to the use of heterogeneous reference correlations and the absence of suitable models for some MOX-specific phenomena. Finally, insights are offered for the second phase of the benchmark, where the fuel performance codes’ capabilities will be assessed against experimental results from Post-Irradiation Examinations of all three pins.

Original languageEnglish
Article number113960
JournalNuclear Engineering and Design
Volume435
DOIs
Publication statusPublished - 15 Apr 2025
MoE publication typeA1 Journal article-refereed

Funding

This work has received funding from the European Union’s Horizon 2020 research and innovation program through the PuMMA Project under grant agreement No 945022.

Keywords

  • CAPRIX
  • Code benchmark
  • Fuel performance
  • High plutonium mixed-oxide fuel
  • Irradiation
  • TRABANT-1/1
  • TRABANT-2/2

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