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DOE OSTI · 3376941

Updates to the HTR-PROTEUS HALEU Benchmark Using Modern Analysis Methodologies

Ortensi, Javier [Idaho National Laboratory] (ORCID:0000000316853916)·Calvin, Olin W [Idaho National Laboratory] (ORCID:0000000195600356)·Seker, Volkan [University of Michigan]·Bess, John D. [J Foster and Associates] (ORCID:0000000249369103)
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Abstract

The HTR-PROTEUS IRPhEP Handbook benchmarks represent some of the highest quality benchmarks available for systems with TRISO-HALEU fuel, graphite pebbles, graphite reflector, and high neutron leakage. Nevertheless, significant variability in computed eigenvalue results was encountered in HTR-PROTEUS configurations that are relevant for transportation configurations. The team will investigate the source of these variabilities in the original benchmark. In addition, the team will investigate the HTR-PROTEUS subcritical measurements, kinetics data, and potential criticality effects from the introduction of hydrogen in the system (water ingress). The project will generate a benchmark evaluation of additional HTR-PROTEUS measurements that can significantly increase the value of these criticality benchmarks in testing nuclear codes and data to support transportation validation needs for industry and the U.S. NRC.

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Ortensi, Javier [Idaho National Laboratory] (ORCID:0000000316853916), Calvin, Olin W [Idaho National Laboratory] (ORCID:0000000195600356), Seker, Volkan [University of Michigan], Bess, John D. [J Foster and Associates] (ORCID:0000000249369103). 2025-07-08. Updates to the HTR-PROTEUS HALEU Benchmark Using Modern Analysis Methodologies. https://www.osti.gov/biblio/3376941

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