Nuclide Inventory Validation: Radiochemical Assay Data Quality and Modeling Challenges in Benchmark Models Development

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Abstract

Oak Ridge National Laboratory is conducting radiochemical assay experiments, using high-precision analytical protocols validated with a comprehensive quality assurance plan, to expand the nuclide inventory validation basis for high burnup spent nuclear fuel. Preliminary measurement data for key actinides and fission products in two pressurized water reactor spent fuel samples are being used to investigate the impact of measurement data uncertainty on the sample burnup estimation. These measurement data are also being used to examine the impact of assumptions applied when developing best-estimate computational models to simulate fuel irradiation history. The simulations are being performed using depletion capabilities in the SCALE code system. Comparison of calculated and measured nuclide concentrations shows good agreement for the considered nuclides.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Physics of Reactors, PHYSOR 2022
PublisherAmerican Nuclear Society
Pages874-883
Number of pages10
ISBN (Electronic)9780894487873
DOIs
StatePublished - 2022
Event2022 International Conference on Physics of Reactors, PHYSOR 2022 - Pittsburgh, United States
Duration: May 15 2022May 20 2022

Publication series

NameProceedings of the International Conference on Physics of Reactors, PHYSOR 2022

Conference

Conference2022 International Conference on Physics of Reactors, PHYSOR 2022
Country/TerritoryUnited States
CityPittsburgh
Period05/15/2205/20/22

Funding

This work was funded by the US Nuclear Regulatory Commission (NRC) and the US Department of Energy (OD E). The authors would like to thank Don Algama of the NRC Office of Nuclear Regulatory Research for his continued support and valuable feedback.

FundersFunder number
U.S. Department of Energy
U.S. Nuclear Regulatory Commission
National Research Council

    Keywords

    • SCALE
    • nuclide inventory
    • radiochemical assay
    • spent nuclear fuel
    • validation

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