PNNL

Harish Gadey specializes in radiation detection and spent nuclear fuel (SNF) analysis with several years of hands-on experience in Monte Carlo-based simulations, back-end systems analysis, detector development, experimental studies, and data analysis. Gadey is proficient in Geant4, geographic information system (GIS) tools, MATLAB, Python, and computer-aided design (CAD) software packages. At PNNL Gadey is involved in several projects in the areas of radiation detection, spent fuel transportation, back-end systems analysis, machine learning, and health physics code consolidation efforts. In graduate school, Gadey contributed to and led multiple efforts to develop radioxenon detection systems with near-zero memory effects and improved detection efficiencies. 

• Back-end systems analysis
• Radiation detection
• Monte Carlo simulations
• Geographic information systems
• Spent nuclear fuel studies
• Machine learning
• Health physics
• Nuclear nonproliferation
• Computer aided design

• PhD in nuclear engineering and radiation health, Oregon State University, 2021
• MS in nuclear engineering, Oregon State University, 2017
• BS in mechanical engineering, SRM Institute of Science and Technology, India, 2015

• American Nuclear Society
• Institute of Nuclear Materials Management

• Energy and Environment Directorate (EED) Of the Year (OTY) Award for the “Draft Generic Environmental Impact Statement for License Renewal of Nuclear Plants” project, PNNL, 2022
• Outstanding Performance Award for the “Drones for Decommissioning” project, PNNL, 2022
• Best in Track Poster Award at the Waste Management Symposia, WM Symposia, Inc., 2022

2022

• Condon C.A., M. Abkowitz, H. Gadey, R. Claypool, S.J. Maheras, M.R. Feldman, and E. Bickford. 2022. "Verification and Validation of START: A Spent Nuclear Fuel Routing and Decision Support Tool." In International High Level Radioactive Waste Management Conference, November 13-17, 2022, Phoenix, AZ, 115-119. La Grange Park, Illinois:American Nuclear Society. PNNL-SA-174406.
• Condon C.A., S. Ghosh, B.A. Napier, G.E. Hammond, and H. Gadey. 2022. "Geologic Disposal Safety Assessment (GDSA) Biosphere Model Development." In International High Level Radioactive Waste Management Conference, November 13-17, 2022, Phoenix, AZ, 776-779. La Grange Park, Illinois:American Nuclear Society. PNNL-SA-174306.
• Gadey H., A.T. Farsoni, and S.A. Czyz. 2022. "A Stilbene-Strontium Iodide Based Radioxenon Detection System for Monitoring Nuclear Explosions." Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1029. PNNL-SA-167137. doi:10.1016/j.nima.2022.166427
• Gadey H., R. Howard, S. Tognini, J. Meszaros, R. Montgomery, S. Chatzidakis, and J. Bae, et al. 2022. "Using Cosmic Ray Muons to Assess Geological Characteristics in the Subsurface." In International High Level Radioactive Waste Management Conference, November 13-17, 2022, Phoenix, AZ, 802-806. La Grange Park, Illinois:American Nuclear Society. PNNL-SA-174558.
• Gadey H., W.M. Nutt, P.J. Jensen, R. Howard, R.A. Joseph, L. Vander Wal, and R.M. Cumberland. 2022. "System Analysis Modeling and Intermodal Transportation for Commercial Spent Nuclear Fuel." In International High Level Radioactive Waste Management Conference, November 13-17, 2022, Phoenix, AZ, 544-548. La Grange Park, Illinois:American Nuclear Society. PNNL-SA-176333.