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
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
Nuclear and Emerging Technologies for Space (NETS 2025)
May 4–8, 2025
Huntsville, AL|Huntsville Marriott and the Space & Rocket Center
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
May 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
June 2025
Nuclear Technology
Fusion Science and Technology
Latest News
U.S. nuclear capacity factors: Stability and energy dominance
Nuclear generation has inertia. Massive spinning turbines keep electricity flowing during grid disturbances. But nuclear generation also has a kind of inertia that isn’t governed by the laws of motion.
Starting—and then finishing—a power reactor construction project requires significant upfront effort and money, but once built a reactor can run for decades. Capacity factors of U.S. reactors have remained near 90 percent since the turn of the century, but it took more than a decade of improvements to reach that steady state. The payoff for nuclear investments is long-term and reliable.
August 10–13, 2014
Cost-Effective Excellence
Amelia Island, FL|Omni Amelia Island Plantation
ANS has secured additional guest rooms at the Amelia Hotel at the Beach! Reservations can be made online at Amelia Hotel at The Beach or via phone by calling 904-206-5600. You must provide the promotion code of UTWC to get the Utility Working Conference rate. ***** As of 7/15/14 - Please contact the Omni Amelia Island, 904-261-6161, to make your reservation. Reservations are made based upon availability.********* Omni Amelia Island Plantation, located at 39 Beach Lagoon, Amelia Island, Florida 32034, is the location for the 2014 Utility Working Conference & Vendor Technology Expo, where all meeting activities and technical sessions will be held. The special room rate for the meeting is: $155.00/per night (single / double rate). Reservations can be made online at Omni Amelia Island Plantation or via phone by calling: 888-261-6161. Attendees must identify themselves as part of the American Nuclear Society to receive the group rate.
Co-General Chairs:
Timothy Rausch (Senior VP and Chief Nuclear Officer, PPL Susquehanna, LLC)
Thomas P. Joyce (President and Chief Nuclear Officer, PSEG Nuclear)
Program Chair:
William Bishop (General Manager, Maintenance, PPL Susquehanna, LLC)
Assistant Program Chairs:
Marilyn Kray (Vice President, Exelon Partners, LLC)
Thomas Remick (Transient Analysis Section Leader, Arizona Public Service)
