ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
Latest Magazine Issues
Aug 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
Fusion Science and Technology
August 2025
Latest News
DOE awards contracts for nationwide LLW and MLLW services
The Department of Energy’s Office of Environmental Management announced yesterday the awards of five basic ordering agreements to conduct nationwide low-level and mixed low-level radioactive commercial waste treatment services at commercial waste treatment facilities of DOE contractors throughout the United States.
20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20)
Cofounder and Chief Technology Officer
NuScale Power
José N. Reyes, Ph.D., co-founded NuScale Power, LLC, co-designed the NuScale passively-cooled small nuclear reactor and has served as the company’s Chief Technology Officer since 2007. Dr. Reyes is an internationally recognized expert on passive safety system design, testing and operations for nuclear power plants. He has served as a United Nations International Atomic Energy Agency technical expert on passive safety systems, is a co-inventor on more than 180 patents granted or pending in 20 countries and has received several national awards including the 2013 Nuclear Energy Advocate Award, the 2014 American Nuclear Society Thermal Hydraulic Division Technical Achievement Award, the 2017 Nuclear Infrastructure Council Trailblazer Award, the 2021 American Nuclear Society Walter H. Zinn Medal, and 2021 inductee into the University of Maryland Innovators Hall of Fame.
Dr. Reyes is a fellow of the American Nuclear Society (ANS), a NURETH fellow, and a member of the National Academy of Engineering. In the past, he has served as head of the Oregon State University (OSU) Department of Nuclear Engineering and Radiation Health Physics, directed the Advanced Thermal Hydraulic Research Laboratory and was the Co-Director of the Battelle Energy Alliance Academic Center of Excellence for Thermal Fluids and Reactor Safety in support of the Idaho National Laboratory mission.
Dr. Reyes currently serves as a Professor Emeritus in OSU’s School of Nuclear Science and Engineering. He holds Ph.D. and Master of Science degrees in nuclear engineering from the University of Maryland and a Bachelor of Science degree in nuclear engineering from the University of Florida. He is the author of numerous journal articles and technical reports, and he has given lectures and keynote addresses to professional nuclear organizations in the United States, Europe and Asia. He is a licensed professional engineer in the state of Oregon.
Patents (180 Patents Granted or Pending in 20 Countries):
Keynote Speaking Engagements in 2022:
Last modified August 1, 2023, 10:20am EDT
