TY - JOUR
T1 - Sensitivity analysis of cesium and strontium release from TRISO particle under irradiation and high temperature conditions
AU - Seo, Seok Bin
AU - Wirth, Brian D.
N1 - Funding Information:
This work was funded by a U.S. Department of Energy Integrated Research Project entitled “Multi-physics fuel performance modeling of TRISO-bearing fuel in advanced reactor environments: IRP-NEAMS-1.2 : Multiscale Nuclear Fuel Performance”. This research made use of the resources of the High Performance Computing Center at Idaho National Laboratory, which is supported by the Office of Nuclear Energy of the U.S. Department of Energy and the Nuclear Science User Facilities under Contract No. DE-AC07-05ID14517. We would like to thank Dr. Nicholas R. Brown for collaborations associated with performing the Sobol sensitivity analysis described in this paper.
Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/7
Y1 - 2023/7
N2 - This paper presents a systematic sensitivity analysis of the diffusivity parameters of cesium and strontium inside Tristructural isotropic (TRISO) fuel particle and their dependence on irradiation and high temperature annealing conditions. The BISON fuel performance code was used to model the base irradiation and the high temperature tests performed within the AGR-1 experiment. The sensitivity analysis results quantified the contributions of the various diffusion parameters to BISON predictions of Cs and Sr release from compacts exposed to a number of different irradiation and thermal conditions. Informed by the Sobol indices, a calibration study provided an optimized set of diffusion parameters that improved the accuracy of BISON predictions. Finally, we describe an analysis of the influence of irradiation and thermal conditions on the Cs and Sr release and characterize their dependence on the testing conditions. The systematic approach in this study allows us to better understand the transport mechanism of Cs and Sr inside TRISO particle, and to identify a number of future needs to fully resolve the discrepancy between BISON predictions of Cs and Sr release with the AGR-1 experimental observations.
AB - This paper presents a systematic sensitivity analysis of the diffusivity parameters of cesium and strontium inside Tristructural isotropic (TRISO) fuel particle and their dependence on irradiation and high temperature annealing conditions. The BISON fuel performance code was used to model the base irradiation and the high temperature tests performed within the AGR-1 experiment. The sensitivity analysis results quantified the contributions of the various diffusion parameters to BISON predictions of Cs and Sr release from compacts exposed to a number of different irradiation and thermal conditions. Informed by the Sobol indices, a calibration study provided an optimized set of diffusion parameters that improved the accuracy of BISON predictions. Finally, we describe an analysis of the influence of irradiation and thermal conditions on the Cs and Sr release and characterize their dependence on the testing conditions. The systematic approach in this study allows us to better understand the transport mechanism of Cs and Sr inside TRISO particle, and to identify a number of future needs to fully resolve the discrepancy between BISON predictions of Cs and Sr release with the AGR-1 experimental observations.
UR - https://www.scopus.com/pages/publications/85152925315
UR - https://www.mendeley.com/catalogue/a1390a38-cc16-340e-8902-8c340b55e99b/
U2 - 10.1016/j.nucengdes.2023.112333
DO - 10.1016/j.nucengdes.2023.112333
M3 - Article
AN - SCOPUS:85152925315
SN - 0029-5493
VL - 408
JO - Nuclear Engineering and Design
JF - Nuclear Engineering and Design
M1 - 112333
ER -