ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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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
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver 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!
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Nuclear Science and Engineering
May 2025
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Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
Technical Session|Panel|Panels
Tuesday, April 23, 2024|1:30–3:15PM PDT|Imperial Ballroom
Session Chair:
Catherine M. Percher
Alternate Chair:
Mark D. DeHart
Session Organizer:
Christopher M. Perfetti
Validation plays a vital role in building trust in the predictive power of models and computational methods. Validation of a code consists of modeling documented real-world experiments and comparing the code-predicted response to the actual, measured response. In this panel session, we will discuss how these experiments are evaluated as benchmarks and used for validation of nuclear data and computational methods. We will also present an overview of four benchmark projects that aim to document different kinds of real-world experiments, with four panelists who chair the projects: Catherine Percher (LLNL), chair of the International Criticality Safety Benchmark Evaluation Project (ICSBEP), Mark DeHart (INL), chair of the International Reactor Physics Experiment Evaluation Project (IRPhEP), Thomas Miller (ORNL), chair of the Shielding Integral Benchmark and Database (SINBAD), and Germina Ilas (ORNL), chair of the Spent Fuel Composition (SFCompo) project. Additionally, Rowdy Davis (UNM), will present on his experience being a benchmark evaluator for ICSBEP, having recently submitted a benchmark on the University of New Mexico research reactor.
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