Woodruff School of Mechanical Engineering
Nuclear & Radiological Engineering and Medical Physics Programs
Modeling and Simulations of Spent Nuclear Fuel Decay Heat and Uncertainty
Dr. Germina Ilas
Senior Research and Development Staff in the Reactor Physics Group, Reactor and Nuclear Systems Division, at Oak Ridge National Laboratory
Thursday, February 1, 2018 at 11:00:00 AM
Boggs Building, Room 3-47
Dr. Farzad Rahnema
Characterization of the energy released from radionuclide decay in nuclear fuel discharged from reactors is essential for the design, safety, and licensing analyses of used nuclear fuel storage, transportation, and repository systems. Decay heat measurements can be expensive or impractical for covering the multitude of existing fuel designs, operating conditions, and specific application purposes. Gap in measurements and knowledge base requires estimates of decay heat using code predictions. This presentation discusses the application of the SCALE nuclear analysis code system for decay heat analysis in spent nuclear fuel, as well the assessment of the uncertainty in the calculated decay heat due to uncertainties in nuclear data and selected manufacturing and operation parameters.
Dr. Germina Ilas is a Senior Research and Development Staff in the Reactor Physics Group, Reactor and Nuclear Systems Division, at Oak Ridge National Laboratory (https://www.ornl.gov/staff-profile/germina-ilas). She earned a Ph.D. in Nuclear Engineering from Georgia Institute of Technology in 2002. Her technical expertise and contributions include reactor analysis and design, spent fuel characterization and source terms, modeling of research reactors, depletion analysis, code and nuclear data benchmarking, uncertainty assessment. Dr. Ilas published over 70 manuscripts in journals and conference proceedings, spanning diverse nuclear science and engineering applications. She currently serves as the lead of the SCALE Training Team (https://www.ornl.gov/scale).
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