Atomic Safety and Licensing Board Panel Members
Select a Panel member's name to view a qualifications summary.
Sue H. Abreu
B.S.E., Purdue University (1978)
M.D., Uniformed Services University of the Health Sciences (1982)
J.D., Oklahoma City University (2011)
Dr. Abreu, appointed as a part-time technical judge in 2015, is an engineer, nuclear medicine physician, and attorney. A retired colonel, she served in multiple positions during her twenty-four year United States Army career, including as the Nuclear Medicine Consultant to the Army Surgeon General. Recently, she has focused her consulting work on nuclear medicine accreditation and product development. She has also worked as a litigation expert witness with respect to hospital and imaging standards. Dr. Abreu led the American College of Nuclear Physicians as President in 2001–02, and was President of the Board of Directors of the Intersocietal Accreditation Commission Nuclear/PET Division in 2009–11. A Fellow of the American College of Nuclear Medicine, Dr. Abreu was recognized with its Lifetime Achievement Award in 2011. Purdue University honored her as an Outstanding Interdisciplinary Engineer in 2001 and inducted her into the Tri-Service ROTC Hall of Fame in 2004. The U.S. Department of Commerce's Malcolm Baldrige National Quality Program selected Dr. Abreu as an Examiner in 2006. Dr. Abreu has co-authored numerous medical publications and is often invited to speak at nuclear medicine conferences.
Gary S. Arnold
B.S., Math, Rensselaer Polytechnic Institute (1975)
M.S., Nuclear Engineering, Rensselaer Polytechnic Institute (1981)
M.S., Math, Rensselaer Polytechnic Institute (1986)
Ph.D., Nuclear Engineering, Rensselaer Polytechnic Institute (1988)
Dr. Arnold was appointed to the Panel as a full-time technical judge in 2008. In his 20 years at Knolls, his major fields of interest included analysis of two-phase flow stability, development of real-time simulation models of advanced/innovative reactor plant designs, realistic evaluations of plant transients, containment thermal hydraulics, and severe accident analysis. He has also acted as liaison with reactor safety engineers in the UK submarine design community. After completing Naval Nuclear Power School in 1977, Dr. Arnold served as an engineering officer aboard a fleet ballistic missile nuclear submarine until his release from active service in 1980. From 1981 to 1983, he worked as a startup engineer during fuel load, initial criticality, physics testing, and power ascension testing at San Onofre Nuclear Generating Station.
Anthony J. Baratta
A.B., B.S., Columbia University (1968)
M.S., Ph.D., Brown University (1978)
Dr. Baratta is a part-time technical member of the Panel. He formerly served as the Associate Chief Administrative Judge (Technical) retiring in January 2014. Before his appointment to the Panel in 2003, he served as professor of nuclear engineering at Penn State. While at Penn State he headed the Nuclear Safety Center, served as the chair of the Nuclear Engineering program, taught graduate and undergraduate courses, and supervised numerous M.S. and Ph.D. theses in nuclear engineering and physics. Dr. Baratta is the author of three books: an introductory nuclear engineering text, Introduction to Nuclear Engineering, co-authored with the late J.R. Lamarsh, a historic account of the accident at Three Mile Island, TMI 25 Years Later: The Three Mile Island Nuclear Power Plant Accident and Its Impact, co-authored with T.W. Conkling and B.A. Osif, and Climate Change: The Technology Challenge, F. Princiotta (Ed.), Springer, 2011. His prior Federal service includes 30 years in the Naval Reserve where he rose to the rank of Captain as well as service with the Division of Naval Reactors, U.S. DOE. Dr. Baratta has served as a consultant on nuclear safety in the U.S. and abroad. He is the author of numerous technical articles on thermal hydraulics, reactor kinetics, and reactor safety. He holds two patents and is active in a number of professional societies.
Mark O. Barnett
B.S., University of Tennessee (1985)
M.S., University of Tennessee (1991)
Ph.D., University of North Carolina (1998)
Dr. Barnett is a licensed professional engineer, and was appointed to the Panel as a part-time technical judge in 2007. He is currently the Malcolm Pirnie Professor of environmental engineering in the Department of Civil Engineering at Auburn University. His research focuses on the fate and effect of metals and radionuclides in the environment, and he has authored approximately fifty peer-reviewed papers on the subject. He has over ten years engineering/applied science experience as a civilian contractor to the nuclear navy and at DOE facilities. He has experience with a wide range of nuclear-related issues, including enrichment, non-proliferation, low-level radioactive and mixed waste management, radiological controls/heath physics, risk assessments, site remediation, and subsurface radionuclide transport.
G. Paul Bollwerk, III
B.A., University of Notre Dame (1975)
J.D., Georgetown University Law Center (1978)
Judge Bollwerk has been a full-time legal member of the Panel since July 1991 and served as Chief Administrative Judge from January 1999 through June 2006. Before being appointed to the Licensing Board Panel, Judge Bollwerk served as an administrative judge on the Atomic Safety and Licensing Appeal Panel, a senior attorney in the NRC Office of the General Counsel, a special assistant U.S. attorney with the Department of Justice, and an associate attorney in the law firm of Gardner Carton & Douglas in Washington, D.C. After graduating from law school, he clerked for a Federal district court judge and a state supreme court judge. Judge Bollwerk is on the faculty of the National Judicial College as a lecturer on managing complex cases and courtroom technology.
William C. Burnett
B.S., Upsala College (1968)
M.S., Ph.D., University of Hawaii (1974)
Dr. Burnett is a part-time technical member of the Panel, having joined in the Fall of 2006. He is currently an Emeritus Professor of Oceanography in the Department of Earth, Ocean and Atmospheric Sciences at Florida State University. Dr. Burnett has a worldwide research program based on the measurement of natural uranium and thorium decay-series isotopes in marine and terrestrial systems. He has chaired committees and working groups sponsored by the Scientific Committee on Oceanic Research (SCOR), the Land-Ocean Interactions in the Coastal Zone (LOICZ) project of IGBP, UNESCO’s Intergovernmental Oceanographic Commission, and the International Atomic Energy Agency (IAEA). Dr. Burnett serves on the Editorial Board of the Journal of Environmental Radioactivity. He has authored approximately 200 peer-reviewed articles in scientific journals and books, and served as principal investigator on over 50 research grants including awards from the National Science Foundation, Office of Naval Research, Department of Energy, American Chemical Society, Asia-Pacific Network for Climate Change Research, Earthwatch, and others.
Randall J. Charbeneau
B.S., University of Michigan (1973)
M.S., Oregon State University (1975)
Ph.D., Stanford University (1978)
Dr. Charbeneau is a licensed professional engineer and was appointed as a part-time technical judge in 2008. He is currently the Assistant Vice Chancellor for Research, The University of Texas System, and continues his appointment as Jewel McAlister Smith Professor in Engineering within the Cockrell School of Engineering at The University of Texas at Austin. He has been on the engineering faculty within the Department of Civil, Architectural and Environmental Engineering since 1978, and has served for eight years as Director of the Center for Research in Water Resources, and more recently for nine years as Associate Dean for Research for the School of Engineering. His research interests include stormwater management, groundwater hydrology, subsurface fate and transport of chemical and radiological materials, radiological assessment, and mathematical modeling. Dr. Charbeneau has served on numerous state and national committees and panels. He has published widely in the technical literature, including his textbook Groundwater Hydraulics and Pollutant Transport.
Michael C. Farrar
B.B.A., magna cum laude, University of Notre Dame (1962)
J.D., first in the class, University of Notre Dame Law School (1965)
Judge Farrar was appointed as a part-time legal judge in 2010 after retiring from his 2001-2010 Panel service as a full-time legal judge. From 1973 to 1980, he was a member of the AEC/NRC Atomic Safety and Licensing Appeal Panel. Judge Farrar's government career included serving as a law clerk for a Federal district court judge in New Orleans, as an appellate lawyer in the Civil Division of the Department of Justice, and two stints at the Environmental Protection Agency: first as the assistant general counsel for pesticides at the Agency's start-up, and later in the Pesticide Environmental Stewardship Program. In 16 years in the private sector, he was vice president for environment at two organizations in the pulp, paper, and forest products industry: first at the industry's national trade association and then at a member company with 150 production facilities. His experience also includes two years of policy analysis at the nonprofit Center for Strategic and International Studies, on projects reviewing the nation's environmental protection system and the nation's nuclear regulatory process. Mr. Farrar served for a decade on the Board of Visitors of Duke University's School of the Environment.
B.S., Nuclear Engineering, Kansas State University (1960)
M.S., Nuclear Engineering, Kansas State University (1961)
Ph.D. Nuclear Engineering, Massachusetts Institute of Technology (1967)
Dr. Foulke was appointed to the Panel as a part-time technical judge in 2009. He is currently an Adjunct Professor at University of Pittsburgh, where he serves as Director of Nuclear Programs in the Mechanical Engineering and Material Science Department. He has over 40 years experience in nuclear science and technology with the Army Nuclear Power Program, Bettis Atomic Power Laboratory, and the Westinghouse Electric Company. In his career, he has managed groups in nuclear safety, environmental engineering, nuclear security, nuclear materials management, reactor methods and programming, reactor performance analysis, training and simulation. His research includes the areas of space- and time-dependent nuclear dynamics and space nuclear power. He has authored numerous technical papers, and has been a licensed nuclear engineer in the State of Pennsylvania since 1997. He served as President of the American Nuclear Society in 2003-2004.
William J. Froehlich
B.A., Harpur College, SUNY @ Binghamton (1972)
J.D., Brooklyn Law School (1975)
Judge Froehlich was appointed a full-time legal member of the Panel in March 2008. Previously, Judge Froehlich was a member of the senior executive service at the Federal Energy Regulatory Commission. He held a number of key leadership positions during his 32-year career at FERC, including Director of the Office of Administrative Litigation, Special Counsel to the Office of Enforcement, Assistant General Counsel for Gas and Oil Litigation and Director of the Financial Regulation Division. He oversaw the agency's trial staff in the adjudication of natural gas, oil pipeline, and electric utility rate cases. He also handled cases involving the importation of liquefied natural gas, the rates and charges for newly constructed pipelines, and the prosecution of cases arising from the Enron trading schemes. He represented the agency and the United States in China and throughout Eastern Europe, where he has lectured foreign regulators and taught classes on administrative law, the privatization of state-owned industries, public utility ratemaking, and the development of independent regulatory structures. Judge Froehlich continues to teach at George Mason University, where he is an adjunct professor of administrative law.
Michael O. Garcia
B.A., Geology, Humboldt State University, California (1971)
Ph.D., Geology, University of California at Los Angeles (1976)
Dr. Garcia was appointed to the Panel as a part-time technical judge in 2007. He has been a professor at the University of Hawaii since 1976. His areas of expertise include field geology, igneous petrology, volcanology, deep scientific drilling and marine geology. He has authored or co-authored over 100 research papers in peer-reviewed journals. His research focuses on active volcanoes, especially in Hawaii. He has been an editor for several international journals and served on advisory panels for NSF and various professional organizations. He is a fellow of the Geological Society of America.
Michael M. Gibson
B.A., University of Oklahoma (1972)
J.D., University of Oklahoma College of Law (1975)
Judge Gibson was appointed to the Panel as a full time legal member in July 2008. Previously, Judge Gibson served as lead trial counsel in complex environmental and toxic tort litigation for both private companies and the Environmental Protection Agency during a span of thirty years. The Chambers US Directory, which lists the top lawyers in the United States based on independent professional research, listed Judge Gibson as an expert in the field of environmental law. Judge Gibson also taught environmental law and policy as an adjunct professor. He has published numerous law review articles on environmental law, as well as a treatise, Environmental Regulation of Petroleum Spills and Wastes (John Wiley & Sons 1993; supp. 1994; Supp. 1995). His legal experience includes serving with the U.S. Environmental Protection Agency (1975-1982), the U.S. Justice Department (1983-1987), and as a partner with several law firms including Jones Day (1987-2008).
Brian K. Hajek
B.A., Math, and B.S., Physics, Otterbein College (1966)
M.S., Nuclear Engineering, Ohio State University (1972)
Judge Hajek was appointed to the Panel as a part-time technical judge in 2008. He is retired from the Graduate Faculty in Nuclear Engineering at The Ohio State University where he was Associate Chair of the nuclear engineering program and where his research interests were in nuclear power plant operations, integrated plant operations, and the human-machine interface, including digital I&C applications, computerized operating procedures, and malfunction diagnosis systems. He spent ten years with NRC in the Post-TMI period as a BWR operator licensing examiner. In 1979, he was a founding partner of NETS, Inc., providing training, audit, and technical services to U.S. and international utilities and vendors. He is a Fellow and active member of the American Nuclear Society, having served as Interim Executive Director in 1997 and Chair of three technical divisions. He was a member of the Ohio Governor's Citizens' Advisory Council on Nuclear Power Safety in the late 1980s, and a member of a special DOE panel to review disposition of DUF6 in 1995. He is the author or co-author of over 100 technical publications and reports, and editor and co-author of three nuclear training texts.
E. Roy Hawkens
B.S., United States Naval Academy (1975)
J.D., College of William & Mary Marshall-Wythe Law School (1983)
Judge Hawkens has been a full-time legal member of the Panel since September 2004, and he was appointed Chief Administrative Judge on July 1, 2006. After graduating from the Naval Academy in 1975, he served as a nuclear engineering division officer aboard a submarine and as a radiological controls officer aboard a submarine tender. He left active duty Naval Service in 1980, but he remained in the Naval Reserve, where he attained the rank of Captain. Upon graduating from law school, where he was Order of the Coif and managing editor of the Law Review, he clerked for Judge Tamm on the U.S. Court of Appeals for the District of Columbia Circuit. In 1985, he joined the Department of Justice where, as a litigator on the Appellate Staff of the Civil Division, he represented the Federal Government in the U.S. Courts of Appeals.
Yassin A. Hassan
B.S., Engineering, University of Alexandria (1968)
M.S., Nuclear Engineering, University of Illinois (1975)
M.S., Mechanical Engineering, University of Virginia, (1985)
Ph.D., Nuclear Engineering, University of Illinois (1980)
Dr. Hassan was appointed to the Panel as a part-time technical judge in 2007. He is Professor and Associate Department Head of the Department of Nuclear Engineering and also Professor of the Department of Mechanical Engineering at Texas A&M University. Prior to joining A&M September 1986, he worked for seven years at Babcock & Wilcox Company, Virginia. His research is in thermal hydraulics, reactor safety, accident analyses, advanced nuclear reactors and aerosol dynamics. He is a fellow of both ANS and ASME, and awarded 2003 George Westinghouse Gold Medal award, 2004 Thermal Hydraulics Technical Achievement award and 2001 Glenn Murphy award of the American Association for Engineering Education. He is the editor-in-chief of the Nuclear Engineering and Design Journal. He supported NRC's research division in certification of AP600, ARC 700 and participated in the Phenomena Identification and Ranking Table panel of high temperature gas cooled reactors.
Thomas J. Hirons
B.S., Mechanical Engineering, University of Notre Dame (1960)
Ph.D., Nuclear Engineering, North Carolina State University (1966)
Dr. Hirons was appointed to the panel as a part-time technical judge in 2008. He worked at the Los Alamos National Laboratory for 32 years in a wide range of technical and management positions. His experience involved a number of Reactor Technology areas, and included more than 10 years in the Nuclear Weapons and Nuclear Safeguards & Security Programs. He served for 8 years (1986-93) as Division Leader of the Nuclear Technology & Engineering Division, as well as Program Director for Nuclear Programs. More recently, his experience included work on Environmental Management, Yucca Mountain, WIPP, and Hanford Tank Remediation. He also served as a Licensing Project Manager with the AEC (1973-75), and as Special Scientific Advisor to the Assistant Secretary of Defense for Atomic Energy (1980-82). Before coming to the Los Alamos National Laboratory, he was an Assistant Professor of Mechanical & Nuclear Engineering at the University of Notre Dame.
James F. Jackson
B.S., Mechanical Engineering, University of Utah (1961)
M.S., Nuclear Engineering, MIT (1962)
Ph.D., Nuclear Engineering, UCLA (1969)
Dr. Jackson was appointed to the Panel as a part-time technical judge in 2006. For the previous 30 years, he had been associated with the Los Alamos National Laboratory, including serving as the Laboratory's Deputy Director for 12 years. He held a number of other technical leadership positions, with an early focus in the area of nuclear reactor safety. This included several research projects funded by the Nuclear Regulatory Commission that developed advanced accident analysis computer codes. As Deputy Director, he had oversight responsibility for a wide range of nuclear programs, operations, and facilities. Prior to Los Alamos, Dr. Jackson worked on nuclear reactor safety at Argonne National Laboratory, space nuclear power development at Atomics International, and taught nuclear engineering at Brigham Young University. He has authored or co-authored over 50 technical papers, primarily in the safety analysis area. He received the Department of Energy's E. O. Lawrence Award in 1983, and was elected to the National Academy of Engineering in 1991.
Jeffrey D.E. Jeffries
B.S., Engineering, United States Naval Academy (1964)
M.S., Ph.D., Nuclear Engineering, The Pennsylvania State University (1970, 1972)
Dr. Jeffries was appointed to the Panel as a part-time technical judge in 2008. He is President of Paradigm Consulting Services, Inc., a management and technical consulting firm that specializes in nuclear safety and risk assessment. Throughout his 40 year career, he has been involved with all aspects of commercial nuclear plant operations and has held responsible positions as a senior nuclear utility manager, a research project manager, a professor and a consultant. Prior to his appointment to the Panel, Dr. Jeffries chaired several oversight groups and provided consulting services for numerous large projects. Earlier in his career, he led the nuclear safety oversight organization at a large utility and he was on the staff of the Electric Power Research Institute (EPRI). Because of his international reputation in the area of nuclear safety, he was invited to participate in two projects for the International Atomic Energy Agency (IAEA); he was also an Instructor of Nuclear Technology at Penn State University and held an appointment as an Adjunct Associate Professor in Nuclear Engineering at the North Carolina State University. Dr. Jeffries has written more than 20 papers on a variety of technical topics and led numerous investigations and assessments on a wide assortment of nuclear-related subjects. He received the Outstanding Engineering Alumni award from Penn State in 1999, is a licensed Professional Engineer in Pennsylvania and North Carolina, and was elected as a Fellow of the American Nuclear Society in 1995.
William E. Kastenberg
B.S., Engineering, UCLA (1962)
M.S., Engineering, UCLA (1963)
Ph.D., Nuclear Engineering, University of California at Berkeley (1966)
Dr. Kastenberg was appointed to the Panel as a part-time technical judge in 2007. For the previous 41 years he was a Professor in the University of California System, first at UCLA (1966-1994) and then at Berkeley (1995-2007), where he retired as the Daniel M. Tellep Distinguished Professor of Engineering. In 1990, he was appointed by the Governor of California to the Independent Safety Committee for the Diablo Canyon Nuclear Power Plant, and served for 10 years. Dr. Kastenberg has taught courses on risk assessment and management for engineered and environmental systems, engineering ethics, nuclear reactor analysis and safety, energy and the environment, and applied mathematics. His research interests include the development and application of risk assessment and risk management methods for complex technological and natural environmental systems. More recently, he has focused on ethics and the impact of technology on society, multi-stakeholder decision-making, the development of new paradigms for defining the risk of complex systems, and the quantification of uncertainty. Dr. Kastenberg has authored or co-authored over 150 published papers in peer-reviewed journals and conference proceedings. He was elected to the National Academy of Engineering in 1997, and was elected a Fellow of the American Association for the Advancement of Science in 1990 and the American Nuclear Society in 1978. He has won distinguished teaching awards from the American Society for Engineering Education, the Engineering Graduate Students' Association at UCLA, and the American Nuclear Society.
Michael F. Kennedy
B.S., Physics, Canisius College (1970)
M.S., Nuclear Engineering, University of Virginia (1973)
Ph.D., Nuclear Engineering, University of Virginia (1978)
Judge Kennedy was appointed to the Panel as a full-time technical judge in January 2008. In January 2014, he was appointed Associate Chief Administrative Judge (Technical). Previously, he worked for over 30 years in the nuclear industry with a primary focus on licensing and safety analysis for current generation light water reactors, advanced reactor designs, and fuel cycle facilities. During his career, he worked for various nuclear consulting companies, nuclear utility organizations, reactor vendors, and Argonne National Laboratory, holding positions of technical leadership or management. He has provided technical support to the NRC in the license renewal area, performed safety analysis reviews for NRR, and updated regulatory guidance documents for RES and NMSS. Prior to this, he performed Integrated Safety Assessments for a number of fuel cycle facilities as well as supporting development of a centrifuge enrichment facility license application. He was a guest lecturer in light water reactor safety analysis for a course in Dubrovnik sponsored by the International Center for Heat and Mass Transfer. He has authored technical papers on nuclear safety and the application of information technology to managing configuration data for nuclear power plants.
Lawrence G. McDade
B.A., Economics, Boston College (1970)
J.D., Boston College Law School (1973)
Judge McDade was appointed as a part-time legal judge in 2012 after retiring from his 2005-2012 Panel service as a full-time Administrative Judge (Legal). Judge McDade served six years on active duty in the U.S. Army as a military defense counsel representing military personnel who were tried by courts martial for various criminal offenses; a military prosecutor advising on all criminal and administrative law matters arising in an overseas combat command; and a military judge presiding over military criminal case trials in the northeast United States. After leaving active duty while continuing to serve as a military judge in the Army Reserve, Judge McDade was employed for more than 25 years at the Department of Justice (DOJ). During his DOJ tenure, either directly or as a supervisor, Judge McDade was involved in much of the innovative enforcement litigation brought pursuant to the Federal Food, Drug and Cosmetic Act and other Federal consumer protection statutes, including the Federal Trade Commission Act, the Consumer Product Safety Act, the Hazardous Substances Act, and National Traffic and Motor Vehicle Safety Act. While employed at DOJ, Judge McDade's performance was recognized with the Department's Distinguished Service Award, Dedicated Service Award, Executive Office for United States Attorneys’ Directors Award, and was also repeatedly recognized with the John Marshall Award, which is presented annually by the Attorney General to recognize the outstanding litigation achievement of the year by DOJ attorneys. Also while employed at DOJ, Judge McDade participated in the Office of Personnel Management's Senior Executive Service Candidate Development Program.
Alice C. Mignerey
B.S. University of Rochester (1971)
M.S. University of Rochester (1973)
Ph.D. University of Rochester (1975)
Dr. Mignerey was appointed to the Panel as a part-time technical judge in 2006. As a professor of Chemistry at the University of Maryland since 1979, Dr. Mignerey specializes in Nuclear Chemistry, with research programs in basic nuclear reactions and the applications of nuclear analytical techniques to environmental problems. She has studied the dating and characterization of ground waters in Southern Maryland using accelerator mass spectrometry. Through her research on nuclear reactions, she has participated in experimental programs at many of the national laboratories, most recently the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. Dr. Mignerey has served as the Chair of the Division of Nuclear Chemistry and Technology of the American Chemical Society and as a member of the Executive Committee of the Division of Nuclear Physics of the American Physical Society. Dr. Mignerey spent three years as a part-time program officer for Nuclear Physics in the Physics Division of the National Science Foundation. She has also served as a member of the Nuclear Science Advisory Committee, which provides guidance to the National Science Foundation and the Department of Energy on matters relating to Nuclear Science research.
Thomas S. Moore
B.A., Miami University (Ohio) (1968)
J.D., Ohio State University (1972)
Judge Moore was appointed to the ASLBP in 1991 after a distinguished 10-year career as an administrative judge on the Commission's Atomic Safety and Licensing Appeal Board. From February 2002 through December 2011, Judge Moore served as the Panel’s Associate Chief Administrative Judge (Legal). On December 31, 2011, he retired from full-time employment with the NRC and was appointed as a part-time legal judge. Judge Moore was formerly in private practice in the firm of Volpe, Boskey & Lyons, worked in the Civil Division, Appellate Section of the Department of Justice, and clerked for Judge William E. Miller on the Sixth Circuit, before joining the NRC in 1980.
Frederick W. Oliver
B.S., Morgan State University (1962)
M.S., Howard University (1965)
Ph.D., Howard University (1972)
Dr. Oliver was appointed to the Panel as a part-time technical judge in 2007. He served as professor of physics for thirty-seven years at Morgan State University and chaired the physics department from 1979 to 1995 and 1999 to 2006. He was the University's Radiation Safety Officer for fifteen years. He has authored or co-authored over 70 scientific papers and abstracts, primarily in nuclear science applications, and he served as principal investigator on 24 research grants from various federal agencies. In addition, he received numerous research appointments as research scientist at the Naval Research Laboratory, Argonne National Laboratory, University of Maryland, NASA, Lawrence Livermore Laboratories, Bell Laboratories, and the Army Research Laboratory.
Paul S. Ryerson
B.A., Wesleyan University (1968)
J.D., Columbia Law School (1971)
Judge Ryerson has been a full-time legal member of the Panel since March 2008, and he was appointed Associate Chief Administrative Judge (Legal) in January 2012. Previously, Judge Ryerson practiced law as a litigation partner with the firm of Jones Day in Washington, D.C., and before that as a partner with the law firm of Arnold & Porter. His practice concentrated on complex litigation and alternative dispute resolution, and he frequently taught courses for the National Institute for Trial Advocacy. Following law school, where he served as a notes and comments editor of the Columbia Law Review, he clerked for United States District Judge Jack B. Weinstein.
William W. Sager
B.S., Duke University (1976)
M.S., University of Hawaii (1979)
Ph.D., University of Hawaii (1983)
Dr. Sager was appointed to the Panel as a part-time technical judge in 2006. He has been an academic researcher and professor since 1983. From 1983-2012, he was professor in the Department of Oceanography at Texas A&M University. Since 2013, he is professor in the Department of Earth and Atmospheric Sciences at the University of Houston. His areas of research specialty include oceanography, marine geology, and earth sciences. He has authored and co-authored over 200 research articles, papers, and abstracts and has participated on 41 oceanographic research cruises.
Ronald M. Spritzer
B.A. Grinnell College (1976)
J.D. University of Pennsylvania (1981)
Judge Spritzer was appointed a full-time legal member of the Panel in March 2008. Previously, he was an attorney in the Appellate Section of the Environment and Natural Resources Division, United States Department of Justice. Before that, he was an attorney in the Environmental Defense Section of the Environment and Natural Resources Division. In his work at the Department of Justice, Judge Spritzer represented the government in cases arising under the nation's major environmental statutes, including the National Environmental Policy Act; the Comprehensive Environmental Response, Compensation, and Liability Act (the Superfund statute); the Clean Water Act; the Clean Air Act; the Safe Drinking Water Act; the Endangered Species Act; and the Nuclear Waste Policy Act. Among other things, he defended federal regulations and orders that protect the nation's wetlands, limit the permissible level of lead in drinking water, and govern the management of radioactive waste stored at atomic energy defense facilities. Following law school, where he served as an associate editor of the University of Pennsylvania Law Review, he clerked for United States District Judge Herbert F. Murray of the District of Maryland.
Nicholas G. Trikouros
B.S., Fordham University (1969)
M.S., New York University (1972)
Eng., Polytechnic University (1986)
Judge Trikouros was appointed to the Panel as a full-time technical member in January 2006, after having served as a part-time technical judge in 2005. Judge Trikouros has over thirty years' experience in the nuclear industry, including as President/Founder of Panlyon Technologies, a professional consulting company involved in nuclear plant design, licensing, and safety analysis, and as the Manager of Safety and Risk Analysis and in senior engineering positions with GPU Nuclear Corporation. His areas of expertise include nuclear plant design basis and licensing, reactor systems, emergency operating procedures, transient and accident analyses, containment performance, plant operations engineering, and probabilistic risk assessment. Judge Trikouros provided onsite technical support during the Three Mile Island, Unit 2 accident and participated extensively in the post-accident evaluation effort. Judge Trikouros has served as an adjunct professor at Rutgers University providing graduate instruction on nuclear energy technology as well as on a variety of nuclear industry groups and committees, including a number of Electric Power Research Institute (EPRI) Advisory Groups, the NRC/Industry Technical Advisory Group for once-through steam generator testing, and the EPRI Utility Steering Committee's Analysis and Testing Subcommittee for Advanced Reactors. He is the author of numerous technical articles on transient analysis and reactor safety and worked as a consultant to the Department of Energy's International Nuclear Safety Program in Ukraine.
Richard E. Wardwell
B.S., Civil Engineering, University of Vermont (1968)
M.S., Civil Engineering, University of Maine (1973)
Ph.D., Civil Engineering, Colorado State University (1980)
Dr. Wardwell was appointed to the Panel in June 2005 as an Administrative Judge (Technical). From 1976 until 1982, he served as a faculty member at the University of Maine and Colorado State. His research experience related to the engineering field behavior of waste materials and long-term deformation of disposal facilities. Before coming to the NRC, Dr. Wardwell was a private consultant to industry and government specializing in the geoscience fields of geotechnical, groundwater, geologic, and hydrologic engineering. For five years, Dr. Wardwell served as Chair of the Board of Environmental Protection appointed by the Governor of Maine. In addition to over thirty years of academic experience with engineering problems related to environmental geoscience engineering, his research and consulting work has focused on quantifying the geoenvironmental behavior of waste disposal facilities, evaluating environmental impacts and remediation alternatives for waste facilities, and designing groundwater and surface water control systems. In addition to numerous consulting reports, Dr. Wardwell has authored more than 30 published technical papers on the topics of water movement in materials, field behavior of waste materials, mining and mill tailings operation, and the geotechnical behavior of earthen structures.
Craig M. White
B.A., Geology, Earlham College (1967)
M.A., Geology, University of Wisconsin (1970)
Ph.D., Geology, University of Oregon (1980)
Dr. White was appointed to the Panel as a part-time technical judge in 2007. He is currently Professor Emeritus in the Geosciences Department at Boise State University where he has worked since 1980. His research has focused on a variety of topics related to igneous petrology and continental volcanism.