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Meet our Instructors

  • Tonya Bernhardt

    Tonya A. Bernhardt, CHP

    Tonya A. Bernhardt, MS, CHP, is a certified health physicist leading ORAU’s professional training programs in her role as operational manager. With more than 20 years of experience training international, federal, state and local professionals in radiation safety, Tonya develops and coordinates courses in all areas of health physics. During her career, she has participated in training development and exercises for the Global Radiation Threat Reduction Project co-managed by the DOE and INTERPOL and has participated in exercises with the Homeland Defense Equipment Reuse Program. Tonya began her career at ORAU as an Applied Health Physics Fellow with the U.S. Department of Energy. She holds an M.S. in Environmental Science and Engineering and a B.S. in Radiological Science, both from the University of North Carolina at Chapel Hill.

  • Glenn Hathaway

    Glenn Hathaway

    Glenn Hathaway has been a health physicist and a Professional Training Programs instructor at ORAU for 11 years. With more than 30 years of experience in the medical/healthcare field, Glenn served as the program director for the School of Nuclear Medicine at the University of Tennessee Medical Center, Knoxville for 22 years, as well as 10 years as an instructor with the University of Tennessee Graduate School of Medicine-Radiology/Nuclear Medicine Residency program. Throughout his career he has published nine abstracts and journal articles and has been invited to present numerous guest lectures. Glenn holds a B.S. in Biological Sciences from the University of Delaware and an M.S. in Instructional Technology from the University of Tennessee, Knoxville.

  • James “Steve” Hutchison

    James “Steve” Hutchison

    Steve Hutchison has been with ORAU for more than 10 years. He began his career at ORAU as a health physics technician in 2011 and has since worked his way up to a training and development specialist for ORAU’s Professional Training Programs. As a training and development specialist, Steve maintains and calibrates surveying equipment while assisting with the development of new lab training activities. He is also often tasked to design and fabricate equipment such as source holders, detector bases and various types of jigs. Steve is qualified to perform detector/rate meter repair and calibration as well as to operate the Canberra ISOCS unit with Genie 2000 software. He is also a certified RAD Worker 2, HAZWOPER. Steve holds an A.A. from Pellissippi State Community College.

  • David King

    David King, CHP

    David King is a board-certified health physicist with over 30 years of experience as an environmental health physicist. He has been with ORAU since 2008 as a senior health physicist, project manager, and instructor. In addition to developing and delivering ORAU’s Professional Training Program materials, David focuses on planning, performing, and evaluating data from radiological characterization activities, especially as related to the Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) and data quality objectives development. He is a published author on a wide range of health physics topics including, but not limited to, nuclear terrorism (ISBN 1-930524-23-4), human health risk and dose assessment (Risk Analysis, Vol. 26, No. 1), and minimum detectable concentrations (Operational Radiation Safety, Vol. 102, No. 2). David holds a B.S. in Physics from Middle Tennessee State University and an M.S. in Radiological Engineering from the University of Tennessee. He became a certified health physicist in 2009 and a certified project management professional in 2012.

  • Andrew Owens

    Andrew Owens

    Andrew Owens has been a health physicist with ORAU since 2016 and is currently a Professional Training Programs instructor. Duties include delivering lectures, setting up laboratory/field exercises, and supporting course development. He began his career with ORAU as part of the Independent Environmental Assessment and Verification program where he supported technical projects, conducted independent verification surveys, and gained experience using Non-Destructive Assay measurements techniques such as the HMS4 and Canberra ISOCS (gamma spectrometers) for in-situ measurements. Andrew holds an M.S. in Radiological Health Sciences from Colorado State University where he conducted research focusing on Monte Carlo simulations using MCNP6. He also holds a B.S. in Nuclear Engineering from the University of Tennessee, Knoxville.

  • Justin Spence, CHP

    Justin Spence, CHP

    Justin Spence is a board-certified health physicist with 30 years of experience working with radiation sources and over 20 years of professional health physics experience. He has been a health physicist at ORAU since 2011 and is involved with developing ORAU’s professional training programs as well as developing health physics communication material. Justin has shared his expertise on regulatory issues, applied health physics, air sampling, environmental monitoring, health physics statistics, radiation instrumentation, and gamma spectroscopy to help create videos and animations for customers from public and private sectors. His previous experience outside of ORAU includes roles such as a regulator, emergency responder and a public health professional. Justin holds a B.S. in Geology from the University of Nebraska-Lincoln and was certified by the American Academy of Health Physics in 2016.

Contact us

For more information about ORAU's Professional Training Programs, contact:

ORAU Professional Training Programs 
P.O. Box 117, MS-11
Oak Ridge, TN 37831-0117
Phone: 865.576.3576
Fax: 865.241.9152