James Allen Anderson Seminar Series: Sensitivity and Uncertainty Analysis in PWR Modeling within the framework of OECD/NEA UAM-LWR Benchmark

Conservative nuclear safety margins limit the present industrial need of increasing nuclear power plant electricity output. Best-Estimate Plus Uncertainty (BEPU) techniques are superior to the traditional conservative methodology, where the safety margins are established by experts under operation hypotheses and conservative assumptions. Among increasing research activities lies the Benchmark for Uncertainty Analysis in Modelling (UAM) for Design, Operation and Safety Analyses of LWRs (UAM-LWR Benchmark), initiated by the Nuclear Energy Agency (NEA)/Organization for Economic Co-operation and Development (OECD). The objectives of the benchmark are to identify the relevant techniques for multi-physics and coupled calculations and to provide a comprehensive and consistent approach for uncertainty evaluation from nuclear data to full plant accidental transients. The technical approach is to establish a benchmark for uncertainty analysis in best-estimate modelling and coupled multi-physics and multi-scale LWR analysis, using as a basis a series of well-defined problems with complete sets of input specifications and experimental reference data. It covers three main topics of nuclear engineering: neutronics, thermal-hydraulics and fuel thermal and mechanical behavior, and addresses the main types of LWRs: PWR, BWR, and VVER. This presentation will summarize the up-to-date activities and achievements, demonstrate PWR simulation results of selected exercises with in-depth technical details, and report the future plan for the benchmark.

Dr. Jason Hou is a Research Assistant Professor at North Carolina State University in the Department of Nuclear Engineering. Prior to the current position, he was a postdoctoral scholar in the Department of Nuclear Engineering at University of California, Berkeley. He holds Ph.D. and Master of Science degrees in Nuclear Engineering from Pennsylvania State University and University of Michigan, respectively. He received the Bachelor of Science degree in Engineering Physics from Tsinghua University, China. His area of research interest includes multi-physics reactor simulation, uncertainty quantification in modeling, advanced reactor design, in-core fuel management and fuel cycle analysis.

This seminar series is named after Dr. James Allen Anderson, who contributed significantly in the establishment of the first undergraduate Nuclear Engineering Program in a Historically Black College/University (HBCU).

Dr. Jason Hou

Department of Nuclear Engineering, North Carolina State University

ECSC Auditorium 100, Thursday,  October 19th, 1:30-2:30 pm


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