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
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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
Oct 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
November 2025
Nuclear Technology
October 2025
Fusion Science and Technology
Latest News
The journey of the U.S. fuel cycle
Craig Piercycpiercy@ans.org
While most big journeys begin with a clear objective, they rarely start with an exact knowledge of the route. When commissioning the Lewis and Clark expedition in 1803, President Thomas Jefferson didn’t provide specific “turn right at the big mountain” directions to the Corps of Discovery. He gave goal-oriented instructions: explore the Missouri River, find its source, search for a transcontinental water route to the Pacific, and build scientific and cultural knowledge along the way.
Jefferson left it up to Lewis and Clark to turn his broad, geopolitically motivated guidance into gritty reality.
Similarly, U.S. nuclear policy has begun a journey toward closing the U.S. nuclear fuel cycle. There is a clear signal of support for recycling from the Trump administration, along with growing bipartisan excitement in Congress. Yet the precise path remains unclear.
Technical Session|Sponsored by RPD
Wednesday, June 15, 2022|10:15AM–12:00PM PDT|Carmel
Session Chair:
Moussa Mahgerefteh (Constellation)
Alternate Chair:
Massimiliano Fratoni
Session Organizer:
Pavel V. Tsvetkov (TAMU)
To access session resources, you must be logged in and registered for the meeting.
Register NowLog In
To access paper attachments, you must be logged in and registered for the meeting.
Quantum Physics Inspired Methods for Two-Batch PWR Loading Pattern Optimization
Joseph Fustero (NCSU), Frank Mueller (NCSU), David Kropaczek (ORNL), Colleen Farrelly (Staticlsym)
Paper
The Neutronic and Economic Advantages of Cuboid Geometry for CANDU and Low-Pressure Reactors
Ibrahim K. Attieh (X-Energy), P. Eng (X-Energy), Roger Webb (SRNL (Retiree)), John Hilborn (Atomic Energy of Canada (Retiree))
Topologically Optimal Nuclear Core Designs Using Deterministic Neutronics
Gavin Ridley (MIT), Lorenzo Venneri (MIT), Benoit Forget (MIT)
Analytic Reactivity Error Analysis of Cross Section Interpolation Methods in Nodal Diffusion Codes
Thomas Folk (Univ. Michigan), Siddhartha Srivastava (Univ. Michigan), Brendan Kochunas (Univ. Michigan)
Understanding Xenon Oscillations Through Physics-Based Reduced Order Modelling
K.T. Pedersen (Chalmers Univ. of Technology), C. Demazière (Chalmers Univ. of Technology), P. Vinai (Chalmers Univ. of Technology)
To join the conversation, you must be logged in and registered for the meeting.
