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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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Oct 2025
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Nuclear Science and Engineering
November 2025
Nuclear Technology
October 2025
Fusion Science and Technology
Latest News
Senate EPW Committee to hold Nieh nomination hearing
Nieh
The Senate Environment and Public Works Committee will hold a nomination hearing Wednesday for Ho Nieh, President Donald Trump’s nominee to serve as commission at the Nuclear Regulatory Commission.
Trump nominated Nieh on July 30 to serve as NRC commissioner the remainder of a term that will expire June 30, 2029, as Nuclear NewsWire previously reported.
Nieh has been vice president of regulatory affairs at Southern Nuclear since 2021, though since June 2024 he has been at the Institute of Nuclear Power Operations as a loaned executive.
A return to the NRC: If confirmed by the Senate, Nieh would be returning to the NRC after three previous stints totaling nearly 20 years.
Technical Session|Sponsored by THD
Wednesday, June 18, 2025|1:00–2:45PM CDT|Chicago Ballroom B
Session Chair:
Subash Sharma (UML)
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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.)
Presented by Broderick Sieh (Purdue Univ.)
Paper
Improvements of the Reactor Vessel Auxiliary Cooling System (RVACS) Models within SAS4A/SASSYS-1
1:20–1:40PM 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
1:40–2:00PM 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
2:00–2:20PM CDT
Gavin Standish (Virginia Commonwealth Univ.), Sierra Tutwiler (Virginia Commonwealth Univ.), Lane B. Carasik (Virginia Commonwealth Univ.)
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