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.
Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
July 2025
Nuclear Technology
Fusion Science and Technology
Latest News
Smarter waste strategies: Helping deliver on the promise of advanced nuclear
At COP28, held in Dubai in 2023, a clear consensus emerged: Nuclear energy must be a cornerstone of the global clean energy transition. With electricity demand projected to soar as we decarbonize not just power but also industry, transport, and heat, the case for new nuclear is compelling. More than 20 countries committed to tripling global nuclear capacity by 2050. In the United States alone, the Department of Energy forecasts that the country’s current nuclear capacity could more than triple, adding 200 GW of new nuclear to the existing 95 GW by mid-century.
2020 ANS Virtual Winter Meeting Plenary Session Appearance
John L. Hopkins is chairman and CEO of NuScale Power, LLC, a leading U.S.-based advanced small modular reactor technology development company.
Prior to joining NuScale in 2012, Hopkins was with Fluor Corporation since 1989, one of the world’s largest publicly-traded engineering, procurement, fabrication, construction and maintenance companies. Hopkins held numerous leadership positions in both operations and business development globally.
From 2010 to 2013, Hopkins served as Fluor’s group president for the corporate development and Emerging Markets. He also had oversight of Fluor Government Group and Fluor global sales and marketing.
Active in a variety of professional and business organizations, Hopkins currently serves as chairman of the Compensation and Succession Committee of the U.S. Chamber of Commerce, Washington, D.C., and was formerly the chairman of the executive committee and chairman of the board. Most recently, he was appointed to the Department of Energy’s (DOE) Nuclear Energy Advisory Committee (NEAC). He is a member of the Nuclear Energy Institute Executive Committee and Task Force Member, Atlantic Council. He is a senior policy advisor of I Squared Capital, New York. He has also served as the senior executive member of both the Fluor Netherlands and Fluor United Kingdom board of directors; chairman of the board for Savannah River Nuclear Solutions, LLC; and as a director of the Business Council for International Understanding.
Last modified November 5, 2020, 10:19am EST
