Bio
As HFIR Maintenance Manager for the Research Reactors Division in the Neutron Sciences Directorate at ORNL, Mr. Christensen is responsible for the safe, reliable, and efficient operation of the High Flux Isotope Reactor. This 85MW reactor is the highest flux reactor-based source of neutrons for research in the United States, and it provides one of the highest steady-state neutron fluxes of any research reactor in the world, enabling world-class capabilities for neutron scattering, isotope production, materials irradiation, neutron activation analysis, and nuclear physics.
Greg joined the ORNL team in 2002 as a Nuclear Reactor Controller in HFIR Operations group following his retirement from the U.S. Navy. During his time in Operations, he had the opportunity to be part of the maintenance team assisting in the new Cold Source installation and startup. In 2007 Greg officially joined the HFIR Maintenance team as a Maintenance Engineer. In 2016, he was selected as the new HFIR Maintenance Manager where he leads his team safely performing the right maintenance, on the right equipment, at the right time.
Prior to joining the ORNL team, Mr. Christensen served 20 years as a submariner in the U.S. Navy. He holds a BSAST in Nuclear Engineering Technology from Thomas Edison State University.