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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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!
Latest Magazine Issues
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
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.
19th International Conference on Probabilistic Safety Assessment and Analysis (PSA 2025)
Technical Session|Sponsored by NISD
Monday, June 16, 2025|3:15–5:00PM CDT|Purdue/Wisconsin
Session Chair:
David Grabaskas
Session Organizer:
Alternate Chair:
Jonathen Facemire
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Developing a Probabilistic Risk Assessment Framework for Sodium-Cooled Thermal Reactors: Addressing Unique Challenges and Uncertainties
3:15–3:35PM CDT
Asmaa S. Farag (Nuclear Installations Safety Division), Parthasarathy Chandran (Aalo Atomics), Amir Afzali (Aalo Atomics), Curtis L. Smith (Idaho National Laboratory)
Paper
Xe-100 PRA Event Sequence Models in Risk-Informed Applications
3:35–3:55PM CDT
Huafei Liao (X-Energy LLC), Karl N. Fleming (KNF Consulting Services LLC), Glen I. Lawson (X-Energy LLC), Mihai A. Diaconeasa (North Carolina State University)
Application Research of the TI-RIPB Licensing Basis in China's Multi-Module High-Temperature Gas-Cooled Reactor
3:55–4:15PM CDT
Jun Zhao (National Tsinghua University), Jiejuan Tong (INET, Tsinghua University), Yanhua Zheng (INET, Tsinghua university), Jingang Liang (INET,Tsinghua university), liguo Zhang (INET,Tsinghua university), Fubing Chen (INET,Tsinghua university), Hongru ZHAO (INET, Tsinghua university)
The Rise and Fall of Probabilistic Safety Assessment in a Remediation and Decommissioning Setting
4:15–4:35PM CDT
Liam D. Alcock (Sellafield Ltd.), Andrew Melia (Sellafield Ltd., UK)
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