Kenneth (Ken) Peters 
|
Representing
the Nuclear Utility Industry. Appointed to the Board in 2019 by Governor
Greg Abbott.
Mr.
Peters is the Senior Vice President and Chief Nuclear Officer for Vistra
Energy/Luminant. Luminant is a
competitive power generation subsidiary of Vistra Energy. In his role as Chief Nuclear Officer, Mr.
Peters is responsible for directing the safe, reliable and cost-effective
operation and maintenance of the Comanche Peak nuclear power plant (CPNPP).
In addition to
providing strategic direction of CPNPP, Mr. Peters also represents Luminant with
the Nuclear Regulatory Commission (NRC), the Institute of Nuclear Power
Operations (INPO), and the Nuclear Energy Institute (NEI). He also serves as Vice Chair of the Board of
Directors for the Utilities Service Alliance (USA).
Prior to
joining Luminant, Mr. Peters held various managerial roles at other nuclear
power stations, including Plant Manager and Vice President, Engineering and
Projects.
Mr. Peters is a graduate of the New Jersey
Institute of Technology, and received a master’s degree from Virginia Tech. He
has attended several executive programs, including the Wharton Executive
Development Program and the Goizueta Directors Institute at Emory University.
|
April 2025
|
Vistra Energy /Luminant
6555 Sierra Dr. Irving, TX 75039
254-897-6565
|
Dr. William Pate 
|
Representing Hospital Administrators. Appointed by Governor Abbott April 2019
Dr. William Pate is Program Director for Radiation & Occupational Safety for the University of Texas Medical Branch and serves as Radiation & Laser Safety Officer for the organization. He has over 10 years of experience in health & safety and holds two master's degrees (public health & business administration) and a doctorate in public health with a focus on environmental & occupational health sciences.
Dr. Pate holds several board certifications including Certified Health Physicist (CHP), Certified Industrial Hygienist (CIH), Certified Safety Professional (CSP), Certified Hazardous Materials Manager (CHMM), Certified healthcare Safety Professional (CHSP), Certified Laser Safety Officer (CLSO), Certified in Public Health (CPH), and Certified Healthcare Facility Manager (CHFM). He is also licensed as a medical physicist in Texas with a specialization in medical health physics.
Dr. Pate is secretary of the State of Texas Chapter of the Health Physics Society, and previously served as president. He is a professional member of the American Society for Healthcare Engineers, a member of the Health Physics Society and the NFPA Laser Fire Protection Technical Committee, and a plenary member of the American Academy of Health Physics. Additionally, he is vice chair of the UT System Radiation Safety Advisory Group and a member of the Laser Subcommittee of the American National Standards Institute. |
April 2025
|
University of Texas Medical Branch Department of Environmental Health & Safety 301 University Blvd
Galveston, TX 77555-111
409-772-2270
|
Sanjay Narayan 
|
Representing the Public. Appointed by Governor Abbott April 16, 2019.
Sanjay Narayan of Dallas is currently an attorney at Loewinsohn Flegle Deary Simon LLP. He is a member of the Texas State Bar, the New York State Bar, the Federalist Society, and the South Asian Lawyers Association. Additionally, he is a member of the Duke University Alumni Association, the University of Pennsylvania Law School Alumni Association, a Pro Bono contributor to the Dallas Volunteer Attorney Program, and active in the community. His history of public interest and service includes interning for Sen. John Cornyn (R-TX) in Washington, D.C. Sanjay received a Bachelor of Science in Economics and a Bachelor of Arts in Political Science from Duke University; a Juris Doctor from the University of Pennsylvania Law School; and a Certificate of Study in Business Economics and Public Policy from the Wharton School of Business.
|
April 2025
|
Loewinsohn Flegle Deary Simon LLP
12377 Merit Dr., Ste. 900 Dallas, TX 75251 |
John Hageman, MS, CHP 
|
Representing Health Physicists. Reappointed in 2011.
Mr. Hageman is a Certified Health Physicist. He is Co-Chair
of the Texas Nuclear Sector Working Group, which is tasked to develop a
state-wide program for Preventive Radiological/Nuclear Detection to assure
Texas can avoid an attack with a Dirty-Radioactive Bomb or an Improvised
Nuclear Device. He is also Vice Chair of the Texas Private Sector Advisory
Council and the Nuclear Reactor, Materials and Waste sector representative.
Mr.
Hageman has served as the Southwest Research Institute (SwRI) Radiation Safety
Officer (RSO) since 1996, As the SwRI RSO, he is responsible for the safe use
of a large variety of radionuclides under a Texas broad scope Radioactive
Material License issued for research and development. He is also responsible for
the safe operation of a large variety of radiation producing machines used for
laboratory analysis and for the SwRI High-Level Radiation Effects Facility.
Mr.
Hageman has served as a consultant for the International Atomic Energy Agency
(IAEA) in the design and for the operation of a portable hot cell used for the
safe and secure dispositioning of irradiators and radioactive sealed sources.
He has managed projects for radioactive source recovery, exchange, disposal,
and security projects for the IAEA, Los Alamos and Sandia National
Laboratories, and for several commercial clients.
Mr.
Hageman, with the SwRI Geosciences and Engineering Div. managed several
projects related to the NRC high-level radioactive waste (HLW) disposal. Prior
to this he was the Health Physicist in SwRI’s Nuclear Nondestructive Testing
and Services Div.
Before
joining SwRI, he worked for Westinghouse Electric as a Nuclear Plant Trainer,
where he supervised nuclear plant operations and the training of Naval officers
in the Idaho Naval Reactors Facilities
Mr. Hageman is a
Fellow in the Health Physics Society (HPS). He served as an HPS Board Member
(03- 06), Treasurer, (09-12), Associate Journal Editor (03-present), and
delegate to the International Radiation Protection Association Conferences (04
and 12). John is an Honorary Life Time Member of the South Texas Chapter of the
HPS and has served as the Chapter’s newsletter Editor-in-Chief, since 1986, and
President (88-91). He is the current Treasurer of the Bexar County Local
Emergency Planning Committee.
|
April 2023 |
Southwest Research Institute 6220 Culebra Rd
San Antonio, TX
78238 210-522-2633 |
Gerald T. (Tim) Powell 
|
Representing the Radioactive Waste Industry. Appointed to
the Texas Radiation Advisory Board in June 2016 by Governor Greg Abbott.
Mr. Powell is the President and Chief Executive Officer for STP
Nuclear Operating Company. In this role, he is responsible for the strategic
oversight of the overall safe and reliable operation and maintenance of all
aspects of the South Texas Project Electric Generating Station including
management of the regulatory interface with the Nuclear Regulatory Commission
(NRC) and the Institute for Nuclear Power Operations (INPO) and management of
radioactive waste. Mr. Powell represents STPEGS on the Nuclear Energy
Institute, Board of Directors. He also serves on the Texas A&M Nuclear
Engineering Advisory Council, the Electric Power Research Institute (EPRI)
Nuclear Power Council Chairman, and is the chair of the Advisory Council for
the Nuclear Power Institute (NPI). He also had the opportunity to serve on the
Bay City Independent School District Board of Trustees for 14 years.
In his more than 30 years with the company, Mr. Powell has
advanced through positions of increasing responsibility including Chief Nuclear
Officer, Vice President, Technical Support and Oversight, Vice President of
Engineering, Site Engineering Director, Systems Engineering Manager,
Performance Improvement Manager, Radiation Protection Manager and Shift
Supervisor Operations. During his time in Operations Mr. Powell was licensed as
a Senior Reactor Operator by the Nuclear Regulatory Commission. He was also
certified in Health Physics by the American Board of Health Physics in 1992.
Mr. Powell is a
graduate of Texas A&M University with a Bachelor of Science degree in
Nuclear Engineering and a Master of Business Administration. He is also a
graduate of the Institute of Nuclear Power Operations’ Senior Nuclear Plant
Manager course and the Senior Nuclear Executive Seminar.
|
April 2021 |
South Texas Project Nuclear Operating Co P.O. Box 289
Wadsworth, TX
77483 361-972-7566 |
Steve Harris 
|
Representing Labor. Appointed to the Texas Radiation Advisory Board in 2011. He serves as a member
of the Industrial, Nuclear Power, Uranium and Waste Committee.
Steve joined Dallas Fire
Rescue in January 1978. In his almost 40-year career with the fire department
he was both a paramedic and fire fighter. He continues to serve the department
as a fire fighter and lieutenant for Dallas Fire Rescue’s Hazardous Materials
Team.
During his career he has
responded to the Oklahoma City Bombing in 1995, served as Hazmat Coordinator
for Super Bowl XLV, was part of the security team for the George W. Bush
Library Ceremony, in 2013, and spent a 2-week deployment in Louisiana for
Hurricane Katrina, as a hazmat manager of the FEMA Texas Task Force Urban
Search and Rescue team.
Mr. Harris is a member of:
the International Fire Fighters Association, the North Texas Joint Terrorism
Task Force, the Department of Homeland Security Center for Domestic
Preparedness, and the Denton County Emergency Service District. Mr Harris has
been appointed by the Governor to serve as a committee member for the STAR of
Texas. He also serves as an instructor for: the Dallas Fire Rescue Training
Academy, the Collin County College, the Department of Homeland Security Weapons
of Mass Destruction, the Center for Radiological and Nuclear Training (CTOS)
and the Department of Justice WMD/Explosives and Dissemination Devices. |
April 2019 |
City of Dallas Fire Department Hazmat/WMD Special Operations 1500 Marilla
Rm 7AS
Dallas, TX
75201 214-670-8555 |
Mark C. Harvey, Ph.D. 
|
Representing Medical Professionals in Nuclear Physics. Appointed to the Texas Radiation
Advisory Board by Governor Greg Abbott in June 2016.
Dr. Harvey is as Assistant
Professor at Texas Southern University. He is a member of the Health Physics
Society, American Association of Physicists in Medicine and the National
Society of Black Physicists. Dr. Mark Harvey received a B.S. in physics from
Virginia State University (Petersburg, VA). He completed his graduate studies
in physics at Hampton University (Hampton, VA) where he earned his M.S. in
physics and Ph.D. in experimental nuclear physics. Dr. Harvey’s doctoral
research experiment in medium energy nuclear physics was carried out at the
National Institute for Nuclear and High Energy Physics in Amsterdam, The
Netherlands. After completing his doctoral work, Dr. Harvey went on to become a
postdoctoral research assistant in the PHENIX collaboration at the Brookhaven
National Laboratory (Upton, NY) where he collaborated on research in the field
of relativistic heavy ion collision physics. After completing his postdoctoral
tenure at Brookhaven, Dr. Harvey accepted a visiting assistant professorship at
the Rochester Institute of Technology (Rochester, NY) where he taught
introductory physics courses for one year, before returning to research as a
postdoctoral fellow at the University of Texas M. D. Anderson Cancer Center
(Houston, TX). Dr. Harvey has over 15 peer-reviewed publications and numerous
presentations on his research at both national and international conferences.
The National Institutes of Health (NIH) and the U.S. Nuclear Regulatory
Commission (NRC) have awarded him federally funded grants. Dr. Harvey’s current
research focuses on radiation dose assessment in medical health physics using
Monte Carlo computer simulation techniques and also radiation detection
apparatuses. He actively mentors students on various research projects in
radiation physics, which include computational modeling and measurement of
stray radiation in radiotherapy. Dr. Harvey currently serves as the director
and primary instructor of the health physics program at Texas Southern
University. He is also a technical reviewer for the NRC.
|
April 2021 |
Texas Southern University Department of
Physics 3100 Cleburne St
Houston, TX
77004 713-313-1864 |
Kenneth V. Krieger 
|
Representing Industry. Trained in nuclear physics,
science, or engineering. Reappointed in June 2016 and Health Physicist and
Radiation Safety Officer.
Mr. Krieger is the Radiation Safety Officer
and Health Physicist for Radiation Technology Inc. in Georgetown, Texas.
Radiation Technology is a small radiation safety consulting company
specializing in the industrial environment. They preform license audits,
licensing assistance, on site services, leak testing services, source
transportation, and general health physics consulting. He is also the lead
instructor in the company’s several radiation safety training courses. He is an
expert in industrial gauging devices, their manufacturing and their
dismantlement. He is a consultant with the International Atomic Energy Agency
(IAEA) for the consolidation of sealed sources for borehole disposal.
He has more than 30 years of experience in
radiation safety and more than 26 years of industrial safety, having had over
100 specific industrial safety training courses. He has served in many
positions in the health physics professional organizations. He was the
secretary for the American Academy of Health Physics, chairman of the Public
Education Committee, now the Public Information Committee, on the program
committee, and has been on the Part II panel for the American Board of Health
Physics. He is now a current member for the Board of Directors for the National
Health Physics Society, and has served in several position for the local
chapter of the Health physics society. He is also certified in Health Physics
by the American Board of Health Physics in 1999. He is also the Laser safety
officer for the company.
Mr. Krieger has two Bachelor degrees and a
Master’s Degree in Health Physics from Texas A&M University. |
April 2021 |
Texas State Technical College 3801 Campus Dr
Waco, TX
76705 254-864-2954 |
Frank (Neal) Leavell, DDS 
|
Representing Dentistry. Appointed to the Texas Radiation Advisory Board by Governor Greg Abbott in
2016.
Dr. Neal Leavell owns and
operates Lampasas Dental Center. He has been practicing general dentistry in
Lampasas since 1982. He received his bachelor’s degree from Baylor University
and his dental degree from Baylor College of Dentistry. He completed a general
practice residency at Audie Murphy VA Hospital in San Antonio.
Neal is a fellow of
the Academy of General Dentistry. He has been active in the Texas Dental
Association, having served as component president, delegate, and other offices.
Neal is currently president of the Lampasas Economic Development Corp. board of
directors. He has previously served on many other local boards and committees. |
April 2021 |
Lampasas Dental Center 1205 Central Texas Expy
Lampasas, TX
76550
512-556-2090 |
Darlene Metter, M.D., FACR 
|
Representing
Nuclear Medicine. Reappointed by Governor Abbott April 16, 2019.
Darlene Metter, MD, FACR is a
Professor of Diagnostic Radiology and Family and Community Medicine in the
Department of Radiology at UT Health San Antonio (UTHSA). She is board
certified by the American Board of Radiology (ABR) and the American Board of
Nuclear Medicine.
Dr. Metter’s current
involvement in organized nuclear medicine includes membership on the Regulatory
Commission’s Advisory Committee on the Medical Uses of Isotopes, ABR Nuclear
Radiology certifying /MOC exam, and Joint Review Committee on Educational
Programs in Nuclear Medicine Technology. Other current radiology leadership
positions include the Texas Radiological Society, the American College of
Radiology and the UTHSA Radioactive Drug and Research Committee. Dr. Metter has
also received several teaching excellence awards, is a multi-invited local to
international lecturer and has been invited for over thirty professorships.
|
April 2025 |
Univ. of TX
Health Science Center at San Antonio Dept of Radiology 7703 Floyd Curl Dr
San Antonio, TX 78229 210-567-6488 |
Simon Trubek, M.D. 
|
Representing Radiology. Appointed to the Texas
Radiation Advisory Board in June 2016 by Governor Greg Abbott.
Dr. Trubek is a
partner at Austin Radiological Association where he is a Diagnostic
Radiologist, Nuclear Radiologist, and Radiation Safety officer. Simon attended
the University of Texas at Austin and Baylor Medical College in Houston. He did
a surgical internship, Diagnostic Radiology Residency, and Nuclear Medicine
Residency at Baylor College of Medicine.
|
April 2021 |
Austin Radiological Association 12554 Riata Vista Cir
Austin, TX
78727 512-795-5100 |
| Kevin L. Raabe, REM |
Representing the Uranium Mining Industry. Appointed to
the Board in 2000 by Governor Bush and twice reappointed by Governor Perry.
Kevin Raabe is Vice Chairman of the Board’s
Industrial, Nuclear
Power, Uranium and Waste Committee, and served previously as Chairman of the
Committee.
Mr. Raabe currently works as Rio Grande
Resources Corporation’s South Texas Operations Manager and Radiation Safety
Officer for General Atomics Uranium Resources Corporation (GAUR). Mr. Raabe
also serves on the Board of Directors for Rio Grande Resources Corporation (RGR)
and Sequoyah Fuels Corporation (SFC).
Mr. Raabe
continues in a 35-year career in the Uranium Mining Industry with General
Atomics. He worked 18 years previously for Chevron Resources Corporation as a
Reclamation Specialist, Environmental/Safety Manager, and Radiation Safety
Officer.
Mr. Raabe work experience includes licensing,
permitting, mining, milling, safety, reclamation and decommissioning activities
associated with the Panna Maria Uranium Mines and Mill, Jack Pump Uranium
Mines, Rhode Ranch Uranium Mine and the Palangana In Situ Uranium Operations.
He continues in an advisory role to GAUR’s Cotter Corporation in Colorado and
Wyoming, RGR’s Mt. Taylor Mine in New Mexico, GAUR’s Beverly Uranium Production
Operations in South Australia and SFC’s decommissioning of the Gore Oklahoma
Uranium Conversion Plant.
Mr. Raabe is a 1980 graduate of Texas
A&M University with a degree in Agricultural Engineering with graduate
studies in Land Reclamation and is a Registered Environmental Manager (REM
7610) with the National Registry of Environmental Professionals. Mr. Raabe has co-authored
several papers on reclamation and decommissioning of uranium mines and mills.
He has served on DOE’s Local Task Force for the Falls City Uranium Mill
Tailings Remedial Action Project, TAES Surface Mine Reclamation Workshop
Planning Committees, the Ad-Hoc Committee on Radioactive Waste Disposal and as
a guest lecturer for the Basic Radiological Health Course at the University of
Texas Health Science Center.
Mr. Raabe currently
serves as President of the Board of Directors for the Three Oaks Water Supply
Corporation and on the Poth Independent School District Planning Committee. |
April 2017 |
General Atomics/Rio Grande Resources Falls City, TX |
Darshan J. Sachde 
|
Representing
the Public. Appointed to the Texas Radiation Advisory Board in 2014. Reappointed April 2019
Drr. Sachde is
a Chemical Engineering consultant for Trimeric Corporation in Buda, Texas. He
has lived in Austin, Texas since 2001, with degrees in Engineering and Public Policy
from the University of Texas at Austin, culminating with a Ph.D. in Chemical Engineering.
During his time at UT, Dr. Sachde worked on research projects that involved the
technical and policy aspects of uranium extraction from seawater and carbon
capture from power plants. He has also held positions with Samsung Austin
Semiconductor and Austin Energy before his current role with Trimeric
Corporation. |
April 2025 |
Trimeric Corportaion 100 S. Main St. Buda, TX 78610 512-295-8118
|
Mark Silberman, M.D. 
|
Representing
Pathology. Appointed to the Texas Radiation Advisory Board in 2011.
Dr. Silberman is
Laboratory Director of Clinical Pathology Laboratories and a member of Clinical
Pathology Associates, both based in Austin, Texas. He is board certified in
Anatomic and Clinical Pathology with additional subspecialty certification in
Hematology. Dr. Silberman completed his medical school, pathology residency,
fellowship in Surgical Pathology and fellowship in Hematopathology at the Johns
Hopkins University School of Medicine in Baltimore, MD. After training, he
joined the faculty at Johns Hopkins as Instructor in the divisions of
Hematopathology, Renal Pathology and Informatics. He joined the laboratory and
pathology practice in Austin in 1999 to establish a department of
Hematopathology. Dr. Silberman is a fellow of the College of American
Pathologists and a member of the American Society of Clinical Pathologists, the
American Medical Association and other professional organizations. |
April 2017 |
Clinical Pathology Associates 9200 Wall St
Austin, TX 78754 512-339-1275 |
Thierno Barry 
| Representing Insurance. Appointed by Governor Abbott April 16, 2019. Thierno Barry received his Baccalaureate (High School diploma) from Lycée d’Arsonval – St. Maur, Creteil (Paris Region, France) and a Bachelor in Business Studies from the University of Houston in 1994. He started his insurance career in 1994 with AIG, where he held several positions with increased responsibilities and had executive oversight over personnel decisions, as well as business operations. In his current Role, with Chubb, Thierno is responsible for Production, distribution and relationship management with the insurance brokerage community, and other key trading partners.
Thierno is a proud father (one daughter). She is currently attending college in the Houston area. In his spare time, Thierno enjoys traveling (Skiing, hiking), playing Racquetball and is an avid fan of Formula-One auto racing. Thierno is a native of The republic of Guinea, in West Africa, where he spent part of his youth, before moving to France, where he attended elementary & high school; he relocated to the USA, following his graduating from High school. Thierno is fluent in French.
| April 2023 | Chubb Holdings 919 Congress Ave., Ste. 1315
Austin, TX 78701 512-634-2225
|
Lynn Slaney Silguero 
| Representing the Public. Appointed by Governor Abbott April 16, 2019.
Lynn Slaney Silguero of Frisco, Ebby Halliday Realtors, BROKER ASSOCIATE® & REALTOR®, CLHMS®, ABR®, SRES® Corporate Relocation Specialist, she is a member of the National Association of Realtors, Texas Association of Realtors, Metro-Tex Board of Realtors, and the Collin County Association of Realtors. Specializes in Residential, New Construction and Land development Real Estate. Additionally, she was appointed on the City of Frisco's 2018-2019 City Charter Review Commission, City of Frisco Social Services & Housing Board 2010-2016, and the City of Frisco Comprehensive Planning Advisory Committee 2013 -2016. Previous Multi Store Management career in Corporate retail to joining Ebby Halliday Realtors in 2001.Graduate of Richardson ISD, Southwest Texas State University. Presently lives in Stonebriar Village in Frisco, TX since 2002.
| April 2023
| Ebby Halliday Real Estate 1415 Legacy Dr.
Frisco, TX 75034 214-668-3079
|