Former Board Members

Sean Sullivan
Mr. Sean Sullivan
2012 to 2017

Mr. Sullivan is a graduate of the U.S. Naval Academy, and served as a U.S. Navy submarine officer for twenty-six years before retiring at the grade of Captain in 2006. During his Navy career Mr. Sullivan was extensively involved in all aspects of operations, maintenance, and oversight of naval nuclear reactors and nuclear weapons. He is a graduate of several technical courses, including a year of nuclear power training, as well as senior level training regarding the supervision and oversight of a naval nuclear propulsion system and nuclear weapons. In his various assignments he has performed and supervised nuclear propulsion plant and weapons radiation monitoring, contamination control, preventive maintenance and repair of naval nuclear propulsion plants and preventive maintenance of nuclear weapons systems. Additionally, he has extensive experience in personnel training and qualification programs in both the ship and shipyard environments.

Mr. Sullivan had several key U.S. Navy assignments, including executive officer of the ballistic missile submarine USS Maryland and commanding officer of the fast attack submarine USS Jefferson City. In his last Navy assignment, Mr. Sullivan served as commanding officer of the Naval Submarine Base New London where he provided leadership and oversight to base operations supporting eighteen nuclear powered submarines and approximately one hundred major facilities.

After leaving active duty, Mr. Sullivan practiced law as a civil litigation attorney for five years with the firm of Brown Jacobson, P.C. in Norwich, Connecticut in the areas of torts, employment law, land use, and municipal law. In 2011, Mr. Sullivan became a partner at Sonalysts, Inc. in Waterford, Connecticut where he provided direct support to the U.S. Navy Strategic Systems Programs Office for the next-generation ballistic missile submarine under development by the U.S Navy and the Royal Navy.

Mr. Sullivan earned a bachelor’s degree in marine engineering from the United States Naval Academy, a Master of Arts in National Security Affairs from the Naval War College and a law degree from the University of Connecticut. He is a member of the state bar of Connecticut. He served from 2009 to 2012 on the Ledyard Town Council.

Peter S. Winokur
Dr. Peter S. Winokur
Ph.D.
2006 to 2015

Dr. Peter S. Winokur of Maryland was appointed a Member of the Defense Nuclear Facilities Safety Board on October 23, 2006. He was appointed by President Obama as the Board’s third Chairman on March 19, 2010, and continued to serve as Chairman until his retirement on January 3, 2015. Dr. Winokur has more than 40 years of experience as a scientist and engineer in the field of radiation effects science, technology, and hardness assurance in support of military and space systems. A Fellow of the Institute of Electrical and Electronic Engineers and the American Physical Society, he was selected as one of the most highly cited researchers in Engineering by the Institute for Scientific Information, which lists the 250 most highly cited researchers in the world in given scientific fields.

Joseph F. Bader
Mr. Joseph F. Bader
2004 to 2014

Mr. Joseph F. Bader, of the District of Columbia, was appointed a Member of the Defense Nuclear Facilities Safety Board on November 30, 2004 and was re-nominated by the President and confirmed on March 19, 2010.  Mr. Bader has held executive and senior management positions primarily in the nuclear weapons complex and nuclear power sectors for Hill International, Inc., Fluor Daniel, Inc., Urenco, Inc., Exxon Nuclear and Westinghouse Electric Corporation.

 

  He has conducted numerous program/project reviews and has extensive knowledge of design, construction management and operations of R&D facilities, materials production, and power plants.  Mr. Bader set up and managed the Fluor Daniel Arlington, VA, office involved in the DOE Weapons Complex Reconfiguration Program.   Mr. Bader received a B.S. in Mechanical Engineering from Villanova University, and an M.S. in Nuclear Engineering from the University of Virginia.

 

John E. Mansfield
Dr. John E. Mansfield
1997 to 2014

Dr. Mansfield is an accomplished theoretical physicist with an exceptionally broad range of experience, both within and outside government, in the management of technology support to national defense programs. From the base of his academic work in elementary particle theory, philosophy, and classical languages, Dr. Mansfield has expanded his interests and contributions to a wide variety of areas of physics, engineering, operations analysis, and political-military studies in support of the national defense and civil space programs.

Resume

1997 - PresentMember, Defense Nuclear Facilities Safety Board Nominated by President Clinton, re-nominated by President Bush and confirmed in 2003. Nominated as Vice Chairman by President Bush and confirmed in 2007. Served as Vice Chairman until June 23, 2010. 1994 - 1997 Associate Administrator for Space Access and Technology, National Aeronautics and Space Administration, development of advanced technologies for space launch and satellite systems1989 - 1994 Professional Staff Member, Committee on Armed Services, United States Senate, strategic submarines, missiles, aircraft, and nuclear weapons 1986 - 1989 Defense Advanced Research Projects Agency, Director of Strategic Technology Office and Chief Scientist of DARPA, research on target recognition, precision weapons, and advanced technologies 1984 - 1986 House Armed Services Committee, Professional Staff Member, nuclear weapons and testing, strategic systems, Air Force research and development 1982 - 1984 Defense Nuclear Agency, Assistant to the Deputy Director (Science and Technology) for Theoretical Research, nuclear weapons effects, radiation simulators, underground tests, support to theater commanders, security and survivability of nuclear weapons 1976 - 1982 Defense Intelligence Agency, Chief, Nuclear Energy and Applied Sciences Division, foreign nuclear weapons, reactors, and advanced technologies 1971 - 1976 Science Applications, Inc., Staff Scientist, Principle Scientist, Program Manager, nuclear weapons effects, nuclear reactor safety1968 - 1970University of Notre Dame, postdoctoral fellow, theoretical physics, elementary particles

Education

  • Ph.D., Harvard University, 1970: Theoretical Physics
  • A.M., Harvard University, 1966: Physics
  • Ph.L., St. Louis University, 1963: Licentiate in Philosophy
  • M.S., St. Louis University, 1963: Mathematics
  • A.B., University of Detroit, 1960: Classical Latin and Greek
Kenneth L. Mossman
Dr. Kenneth L. Mossman
2013 to 2014

Dr. Kenneth L. Mossman of Scottsdale, Arizona was confirmed by Congress on November 14, 2013, for a term expiring October 18, 2016. He joined the Board after a 40 year career in higher education as a faculty member at both Georgetown University and Arizona State University. Throughout his career, Dr. Mossman received numerous awards and served on a number of national and international advisory groups. Dr. Mossman passed away in January, 2014, shortly after joining the Board.

Larry W. Brown
Mr. Larry W. Brown
J.D.
2006 to 2011

Larry W. Brown was confirmed by the U.S. Senate in September 2006 to be a member of the Defense Nuclear Facilities Safety Board. Prior to 2001, Mr. Brown served on active duty in the United States Navy, and on retirement in 1996 completed a law degree. He began his military service as a Seaman Recruit and retired as a United States Navy Captain after having served from 1963 to 1996 onboard ten ships, including nuclear submarines, destroyers, frigates, supply ships, and a nuclear aircraft carrier. He retired from the Board in February, 2011. Early in his career he qualified in nuclear plant operations on three naval nuclear reactors.

His last two sea tours were as Commanding Officer of the Guided Missile Destroyer USS LUCE (1989-91), and of the Guided Missile Frigate USS MAHLON S. TISDALE (1991-92), respectively. While serving as Commanding Officer, his ships earned many awards including the Chief of Naval Operations Safety Award and the Squadron nomination for the Pacific Fleet Lamps (Helicopter) Safety Award. He earned six personal awards while serving in the United States Navy, including the Legion of Merit for service on the staff of the Chief of Operations in 1996.

Upon retirement he completed law school and subsequently worked as an attorney before joining the Administration in 2001. Mr. Brown was assigned to the U.S. Department of Energy (DOE) and worked as the Senior Policy Advisor for nuclear, spent fuel and non-proliferation and nuclear security issues. In this role he provided recommendations on a broad cross-section of key issues to the Office of Nuclear Energy, the Office of Environmental Management, the Office of Non-proliferation and International Security, the Under Secretary, and the Deputy Secretary of Energy.

As a DOE Senior Policy Advisor he coordinated efforts to capture value from the government’s uranium inventories, while encouraging private industry to modernize nuclear fuel cycle facilities in the United States. His efforts contributed to the resolution of private claims for prior transfers of 9,950 tons of contaminated natural uranium, decontamination of nearly 15,000 tons of technetium contaminated natural uranium, and recognition of the value of the government’s large inventory of high assay depleted uranium. At the end of his term at DOE, the stagnant U.S. uranium enrichment industry, which previously had no concrete plans for deployment of new enrichment technology, had begun two privately funded technology development and deployment initiatives.

In 2005 the Deputy Secretary directed him to lead the DOE Task Force that developed the Global Nuclear Energy Partnership (GNEP), subsequently a Presidential initiative, with the objective of eliminating the major impediments to the expansion of commercial nuclear energy, including — on a global scale — closing the nuclear fuel cycle, reducing commercial nuclear waste and stemming the illicit spread of sensitive nuclear technologies. In 2006 Mr. Brown was presented the Secretary of Energy’s Silver Award in special recognition of his work on the President’s Global Nuclear Energy Partnership.

His last position at the Department of Energy before joining the Board was the Deputy Assistant Secretary for Corporate Business Operations in the Office of Nuclear Energy where he spearheaded the GNEP international initiative, which has since been embraced by all the world’s major nuclear power nations, and many others.

Since reporting to the Board, Mr. Brown has visited all the defense nuclear sites multiple times, focusing attention on the facilities material condition, formality of operations, and safety issues associated with wet chemistry operations. In addition he has highlighted the importance of DOE establishing the robust radiological safety Research and Development program discussed in the Board’s recommendation 2004-1, and strengthening government contractor oversight principally through thoroughly qualified and adequately staffed Facility Representative (FACREP) programs at each defense nuclear site.

Separate and apart from his duties as a Board Member, he has continued to participate in conferences discussing the future of commercial nuclear power, speaking principally on the issues of non-proliferation of sensitive technologies. In 2007 he spoke on the subject of non-proliferation at the GNR2 (Global Nuclear Fuel Reprocessing and Recycling) Conference, and at the Howard H. Baker Center for Public Policy conference on “The Role of Nuclear Power in Global and Domestic Energy Policy: Recent Developments and Future Expectations”, and for the third time he participated in the bi-annual US-Japan Workshop on Nuclear Energy.

Education

  • J.D., Georgetown University Law Center, 1998. He is licensed to practice law in the Commonwealth of Virginia, the State of Maryland, and the District of Columbia.
  • M.A., United States Naval War College, Newport, RI, 1993, (National Security and Strategic Studies).
  • B.A., University of Colorado, 1972.(Physics)
A. J. Eggenberger
Dr. A. J. Eggenberger
1989 to 2009

An expert in nuclear safety and earthquake engineering, A. J. Eggenberger was appointed in August 1989 to be Vice Chairman of the newly established Defense Nuclear Facilities Safety Board and Chairman in July, 2005. At the Defense Nuclear Facilities Safety Board he was directly involved in all aspects of the safety oversight of the Department of Energy's nuclear facilities. This includes design, operational, decommissioning, and construction nuclear safety. He retired from the Board in July, 2009.

Prior to this, Eggenberger was a senior official at the National Science Foundation serving as Program Director and Leader of the Earthquake Hazard Mitigation Program. In addition to his significant contribution at the Foundation, the Department of Energy recognized Eggenberger's broad experience and knowledge by selecting him to be a member of the Committee on Seismic Isolation for the New Production Reactor Program and as a member of the Board of Governors for the Seismic Technology Program.

Eggenberger's expertise in the area of nuclear technology was acknowledged by the international community when officials of the International Atomic Energy Agency in Vienna, Austria, requested him to serve as an expert consultant with the Division of Nuclear Safety. For five years, until he assumed his Defense Nuclear Facilities Safety Board position, Eggenberger was able to share his considerable knowledge, providing expertise to the Agency and its member states on nuclear safety issues related to the siting and construction of nuclear facilities.

Until joining the National Science Foundation in 1984, Eggenberger was an Associate Partner with D'Appolonia Consulting Engineers in Pittsburgh, Pennsylvania, where he was directly in charge of the Nuclear Facilities Group. Under his direct management the Group dealt with engineering issues ranging from mining, milling, fabrication, and reprocessing to disposal facilities in the U.S. and abroad. Eggenberger also has extensive participation in Naval Reactors prototype programs.

Early in his career (1967 to 1972), Eggenberger was a Professor and Researcher at the University of South Carolina in Columbia.

Eggenberger graduated with a Bachelor of Science from Carnegie Mellon University in 1961. He earned a Master of Science from The Ohio State University in 1963, followed by a Doctor of Philosophy in 1967 from Carnegie Mellon University.

R. Bruce Matthews
Dr. R. Bruce Matthews
2003 to 2005

Dr. Matthews has more than thirty years of scientific and engineering experience in nuclear technologies with a primary focus on special nuclear materials, weapons plutonium, and nuclear reactor fuels. In addition, Dr. Matthews has managed nuclear facilities including operations, construction, regulatory compliance, integrated safety management, and safeguards and security. He served as a Board member from April, 2003 to October, 2005.

 

 Dr. Matthews received a BS in Metallurgy from Penn State, an MS in Materials Science from the University of Denver, and a Ph.D. in Materials Science from the University of Wales.

Dr. Matthews was appointed by President George W. Bush on April 22, 2003, to be a Member of the Defense Nuclear Facilities Safety Board, which oversees the safe operation of the Nation's nuclear weapon plants. While at the Board, Dr. Matthews was principal author of DNFSB/TECH-35, Safety Management of Complex, High-Hazard Organizations, and DNFSB/TECH-36, Integrated Safety Management: The Foundation for a Successful Safety Culture. Dr. Matthews left the Board in December 2005.

Dr. Matthews spent eight years as a Research Scientist at Atomic Energy of Canada where he developed advanced nuclear fuels and structural materials. He subsequently spent two years as a Research Scientist at Pacific Northwest Labs working on proliferation resistant fuels for advance nuclear power systems. Dr. Matthews worked as a line and program manager at Los Alamos National Laboratory since 1980, and has been involved in DOE programs in stockpile stewardship, nuclear materials disposition, environmental management, and space and terrestrial nuclear power systems. Dr. Matthews was Director of the Nuclear Materials Technology Division from 1993 to 1999 and had overall responsibility for facility operations, base technologies, and program execution involving plutonium and other actinide materials at the Los Alamos TA-55 Plutonium Facility and the Chemistry Metallurgy Research Building. That position had two major aspects: (1) Managing the nuclear facilities infrastructure including nuclear facility construction projects, facilities operations, nuclear materials control and accountability, waste management, environmental compliance, industrial and radiation safety, training, quality assurance, and safeguards and security. (2) Managing technical and programmatic nuclear materials activities including DOE/Defense Program plutonium activities in stockpile manufacturing, surveillance and R&D; DOE/Environmental Management actinide materials projects in waste management, residue stabilization, and legacy materials cleanup; DOE/Nuclear Energy projects in PU238 heat sources, advance reactor fuels, and transmutation of nuclear wastes; and DOE/Materials Disposition Projects in nuclear materials management, pit disassembly, mixed-oxide fuels, and long-term storage.

In 2000, Dr. Matthews received a Senior Scientific Manager Return to Research grant at the University of California at Santa Barbara. Dr. Matthews is the author or co-author of more than eighty journal publications, conference proceedings and technical reports. He initiated the international Plutonium Futures Conference and is a Fellow of the American Nuclear Society.

John T. Conway
Mr. John T. Conway
J.D.
1989 to 2005

John T. Conway, an engineer and attorney, is a former Chairman of the Defense Nuclear Facilities Safety Board. His nuclear experience includes 12 years on the staff of the Joint Committee on Atomic Energy, U.S. Congress (six years as Staff Director), 11 years as president/ Chairman of the Board of the American Nuclear Energy Council, and eight years as Chairman of the Con Edison Indian Point Nuclear Facilities Safety Committee.

1989 - 2005 Defense Nuclear Facilities Safety Board,Chairman 1982 - 1989 Consolidated Edison Company, Executive Vice President 1982 - 1989 American Nuclear Energy Council (ANEC),Chairman 1978 - 1982 American Nuclear Energy Council (ANEC), President, Chief Executive Officer 1968 - 1978 Consolidated Edison Company, Executive Assistant to Charles F. Luce, Chairman of the Board (1970 78, duties included Chairman, Nuclear Facilities Safety Committee) 1956 - 1968 United States Congress, Staff Joint Committee on Atomic Energy (1958 62, Assistant Staff Director; 1962 68, Executive Director) 1950 - 1956 Federal Bureau of Investigation, Department of Justice, Special Agent served in Kentucky, New York, Washington, D.C.1949 - 1950 Meighan & Necarsulmer Law Firm, AssociateEducationColumbia University School of Law, LLB, 1949 (converted to Juris Doctor, 1969) Tufts University, BS Engineering, 1947 Military ServiceU.S. Navy, active duty February 4, 1943 to September 1946; Saw service in North Atlantic, USPC78l, Discharged Lt.(j.g.)Professional MembershipsAdmitted to New York Bar, 1949, and Supreme Court of the United States, 1953 AwardsGrand Council of Hispanic Societies in Public Service Humanitarian Award The James and Jane Hoey Award for Interracial Justice

Joseph J. DiNunno
Mr. Joseph J. DiNunno
1992 to 2002

Joseph J. DiNunno was nominated to the Defense Nuclear Facilities Safety Board in 1992. Following confirmation by the United States Senate, DiNunno assumed his official duties on August 13, 1992 and served until his retirement in May 2002.  

 

Prior to joining the Board, he had more than five decades of diverse engineering and environmental experience, including 40 years in the nuclear field in senior positions within both the Federal Government and private industry.

He began his professional career in 1942 as an electrical engineer with Westinghouse Electric Corporation. Shortly thereafter, he joined the Department of the Navy, and for the next 17 years assumed increasingly responsible positions with the Bureau of Ships, the Naval Ordnance Laboratory, and the Naval Reactors Branch of the Bureau of Ships/Atomic Energy Commission (AEC). His initial assignment at Naval Reactors was oversight of the development of advanced instrumentation and controls for naval nuclear reactors. Admiral Rickover subsequently assigned DiNunno as Project Officer for the nuclear power plant of the USS Long Beach.

Upon transferring to AEC in 1959, DiNunno became a member of the regulatory staff that reviewed the safety aspects of the design, construction and operation of nuclear reactors, Space Nuclear Auxiliary Power systems, and a variety of uranium and plutonium processing facilities. Among his assignments was the matrix management of subject matter experts in reactor pressure vessel design, instrumentation and control systems, emergency power systems, core designs and containment systems. He also coordinated the regulatory program of reactor safety research and directed the development of reactor siting and safety standards. In 1967, he was assigned to Paris as AEC's Scientific Representative, where he served as technical liaison with atomic energy authorities in ten European countries, the Nuclear Energy Agency, and the International Atomic Energy Agency. In 1969, Mr. DiNunno returned to AEC headquarters to head the agency's first Office of Environmental Affairs. This office served as the principal AEC interface with local and national environmental groups concerned about the impact of nuclear power development on the environment and with the federal Council on Environmental Quality (CEQ) and other federal agencies in the development of plans for AEC implementation of the National Environmental Policy Act.

From 1972 to 1983, Mr. DiNunno was employed by the NUS Corporation. As Vice President and General Manager of the Environmental Safeguards Division, and later Technical Director of the Environmental Systems Group, he was responsible for engineering and environmental services provided both industry and the government. He managed and technically directed an inter-disciplinary staff of meteorologists, hydrologists, geologists, ecologists, socio-economists, geographers, land use planners and nuclear engineers. The Environmental Systems Group included both an Ecological Science Laboratory and a Radiation Environmental Monitoring Laboratory. It provided support services to a broad range of clients in the areas of site selection, site qualification, environmental reports, air and waste water discharge permitting and licensing as required to satisfy federal and state environmental protection requirements (National Environmental Policy Act, Nuclear Regulatory Commission, Environmental Protection Agency, Department of Transportation). These services were performed on a wide variety of nuclear and non-nuclear projects, including environmental investigations of sites for both low-and high-level radioactive wastes.

With the exception of 2 years of full-time employment with R.F. Weston (1986-88) in support of the Department of Energy's Civilian Radioactive Waste Management Program, Mr. DiNunno continued his professional career part-time (1983-92) as an independent consultant, providing environmental and nuclear safety advisory services to both industry and the government. His career included a number of years as a member of the Space Applications Board of the National Research Council and the Citizens' Advisory Panel on the Cleanup of Three Mile Island.

Mr. DiNunno has written extensively on such issues as the safety of nuclear reactors and environmental considerations in power plant siting. He has also lectured on these topics at universities and industry seminars.

Mr. DiNunno graduated in 1942 with a Bachelor of Science degree in Electrical Engineering from Pennsylvania State University. He earned a Master of Science degree in Electrical Engineering from the University of Maryland in 1954. In 1956-57, he received training in nuclear engineering at the Oak Ridge School of Reactor Technology.

Pages