Skip to content

Jess Gehin

Reactor Technology R&D Integration Lead in the Reactor and Nuclear Systems Division at Oak Ridge National Laboratory

Biography

Dr. Jess Gehin joined the Oak Ridge National Laboratory in 1992 and is currently the Reactor Technology R&D Integration Lead in the Reactor and Nuclear Systems Division at Oak Ridge National Laboratory. He also leads the Advanced Modeling Applications for the Consortium for Advanced Modeling and Simulation of Light Water Reactors as well as being engaged in additional programmatic areas related to advanced nuclear fuel cycles and advanced reactors. His primary areas of expertise are nuclear reactor physics and reactor and fuel cycle technology.

From 2003 to 2008 Dr. Gehin served as the leader of the ORNL Reactor Analysis Group with the responsibility for managing fourteen research and development staff with projects sponsored primarily by the Department of Energy office of Nuclear Energy, Nuclear Regulatory Commission, National Nuclear Security Administration, Department of Homeland Security, and the Department of Defense. Prior to this position, Dr. Gehin was a Senior R&D staff member performing research primarily in the area of nuclear reactor physics working on projects such as the development of the Advanced Neutron Source Research Reactor, Fissile Material Disposition, and modeling of experiments in the High Flux Isotope Reactor.

Dr. Gehin earned his B.S. degree in Nuclear Engineering in 1988 from Kansas State University and M.S. (1990) and Ph.D. (1992) degrees in Nuclear Engineering from the Massachusetts Institute of Technology. Dr. Gehin also holds the position of Joint Associate Professor in the Nuclear Engineering Department at the University of Tennessee.


Research

Nuclear reactor physics computational methods for Light Water Reactors (LWRs) and advanced reactor concept development, design, and operations.

Advanced nuclear reactor technology development including Fluoride salt-cooled High-temperature Reactor (FHR) concepts

Nuclear fuel cycle systems and options analysis including fuel cycle evaluations to support R&D decisions and technical aspects of thorium-based fuel cycle systems.


Education

B.S. degree in Nuclear Engineering (1988) from Kansas State University

M.S. (1990) and Ph.D. (1992) degrees in Nuclear Engineering from the Massachusetts Institute of Technology


Publications

J.J. Powers, T.J. Harrison, J. C. Gehin, “A New Approach for Modeling and Analysis of Molten Salt Reactors Using SCALE,” Int. Conf. Math. Comp. Methods Applied to Nuc. Sci. (M&C 2013), Sun Valley, Idaho, May 5-9, 2013

R. A. Wigeland et al. [J.C. Gehin co-author], “Evaluation and Screening of Fuel Cycle Options,” Proceeding of 2013 International Congress on Advances in Nuclear Power Plants (ICAPP ’13), Jeju Island, Korea, April 14–18, 2013

Kurt A.Terrani, Lance L, Snead, Jess C. Gehin, “Microencapsulated fuel technology for commercial light water and advanced reactor application,” Journal of Nuclear Materials, 427(1-3),pp 209-224, August 2012

Dean Wang et al. [Jess C. Gehin coauthor], “Study of Fukushima Daiichi Nuclear Power Station Unit 4 Spent-Fuel Pool,” Nuclear Technology, 180(2) pp 205-215 (November 2012)

J. C. Wagner, et al, [J.C. Gehin co-author], “Assessment of Used Nuclear Fuel Inventory Relative to Disposition Options,” 2013 International High-Level Radioactive Waste Management (2013 IHLRWM), Albuquerque, NM, April 28-May 2, 2013

Emilian Popov, Jin Yan, Zeses Karoutas, Jess Gehin, Robert Brewster, Emilio Baglietto, “PWR Internal Flow Modeling With Fuel Assemblies Details,” International Congress on Advances in Nuclear Power Plants – ICAPP 2012, Chicago, IL, June 24-28, 2012

Ling Zou and Hongbin Zhang, Jess Gehin, Brendan Kochunas, “A Coupled TH/Neutronics/CRUD Framework in Prediction of CIPS Phenomenon,” PHYSOR 2012 – Advances in Reactor Physics, Knoxville, TN, April 16-19, 2012


Contact Information

The flagship campus of the University of Tennessee System and partner in the Tennessee Transfer Pathway.