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
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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
June 2025
Nuclear Technology
May 2025
Fusion Science and Technology
Latest News
Sam Altman steps down as Oklo board chair
Advanced nuclear company Oklo Inc. has new leadership for its board of directors as billionaire Sam Altman is stepping down from the position he has held since 2015. The move is meant to open new partnership opportunities with OpenAI, where Altman is CEO, and other artificial intelligence companies.
Technical Session|Sponsored by THD
Wednesday, June 18, 2025|1:00–2:45PM CDT|Chicago Ballroom B
Session Chair:
Dillon R. Shaver
Session Organizer:
Alternate Chair:
Izabela Gutowska
To access paper attachments, you must be logged in and registered for the meeting.
Register NowLog In
Effect of Leak in the Upper Vessel Head of HTGRs on Onset of Natural Circulation
1:00–1:20PM CDT
Daniel W. Gould (Kansas State), John M. Matulis (Purdue Univ.), Hitesh Bindra (Purdue Univ.)
Paper
Validation of Forced Convection Simulations for the University of Wisconsin-Madison Air-Cooled Reactor Cavity Cooling System
1:20–1:40PM CDT
Sinan Okyay (Penn State), David Reger (INL), Victor Coppo Leite (INL), Elia Merzari (Penn State), Paolo Balestra (INL), Gerhard Strydom (INL)
Improvements of the Reactor Vessel Auxiliary Cooling System (RVACS) Models within SAS4A/SASSYS-1
1:40–2:00PM CDT
Yeongshin Jeong (ANL), Daniel O'Grady (ANL), Acacia J. Brunett (ANL)
A One-Dimensional Modelling Approach for Thermal Mixing and Stratification in Nuclear Reactors: Numerical Verification and Demonstration
2:00–2:20PM CDT
Eric Cervi (ANL), Grégoire Lebrun (ANL), Ling Zou (ANL), Rui Hu (ANL)
Simulations of Twisted Tape Inserts of Varying Twist Pitches to Understand Thermal Hydraulic Impacts in Fusion Energy Systems
2:20–2:40PM CDT
Gavin Standish (Virginia Commonwealth Univ.), Sierra Tutwiler (Virginia Commonwealth Univ.), Lane B. Carasik (Virginia Commonwealth Univ.)
To join the conversation, you must be logged in and registered for the meeting.