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
Wednesday, June 18, 2025|10:00–11:45AM CDT|Chicago Ballroom C
Session Chair:
Zahra Mohaghegh
Alternate Chair:
Carl Richard (Rick) R. Grantom
Session Organizer:
David Grabaskas
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Interactions of Human Performance, Physical Failure Mechanisms, and Organizational Factors in Socio-Technical Risk Analysis of Complex Technological Systems
10:00–10:20AM CDT
Muhammad Hammad Khalid (University of Illinois Urbana Champaign), Ha H. Bui (University of Illinois Urbana Champaign), Seyed-A. Reihani (University of Illinois Urbana Champaign), Vicki Bier (University of Wisconsin-Madison), Cheri Ostroff (University of South Australia, Adelaide, Australia), Zahra Mohaghegh (University of Illinois Urbana Champaign)
Paper
Development of a Novel Risk-Based Economic Framework to Assist Microreactor Deployment
10:20–10:40AM CDT
Nahuel Guaita (Idaho National Laboratory), Wen-Chi Cheng (INL), Mauricio T. Retamales (INL), Silvio Guaita (University of North Carolina)
Common-Cause Failure Parameter Estimates with Causal Alpha Factor Model, Component-Specific Priors, and More
10:40–11:00AM CDT
Zhegang Ma (Idaho National Laboratory), Sai Zhang (Idaho National Laboratory), Christopher Hunter (Nuclear Regulatory Commission), Ali Mosleh (University of California, Los Angeles), James Knudsen (Idaho National Laboratory), John Lane (Nuclear Regulatory Commission), Kevin Coyne (Nuclear Regulatory Commission)
Tackle the Complexity of PRA Models: What Does Define It?
11:00–11:20AM CDT
Claudia Picoco (EDF R&D), François Sauvaget (EDF R&D), Mohamed Hibti (EDF R&D), Mouna RIFI (EDF R&D)
Experience with PRA Training and Hands-on Implementation
11:20–11:40AM CDT
Hugo P. Campanella (Engineering Planning and Management, Inc)
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