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
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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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Apr 2025
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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.
Technical Session|Sponsored by RPD
Tuesday, November 15, 2022|10:00–11:45AM MST|Sonoran 7
Session Chair:
Zeyun Wu (VCU)
Alternate Chair:
Massimiliano Fratoni (UC Berkeley)
Session Organizer:
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Verification of Diffusion Solver with Equivalent Transport Factors on PWR Assembly Models
10:00–10:20AM MST
Muhammad Rizki Oktavian (Purdue), Oscar Lastres (Purdue), Yunlin Xu (Purdue)
Paper
Discrete Element Method Investigation of Reflector Dimples for a General Pebble Bed Reactor Design
10:20–10:40AM MST
David Reger (Penn State), Paolo Balestra (INL), Ryan Stewart (INL), Gerhard Strydom (INL), Elia Merzari (Penn State)
Application of Two-Node Discontinuity Factor for Improving Accuracy of Nodal Calculation
10:40–11:00AM MST
HwanYeal Yu (KEPCO Nuclear Fuel), Joo-Ill Yoon (KEPCO Nuclear Fuel)
Real Variance Estimation in the iDTMC-Based Depletion Analysis Using Correlated Sampling
11:00–11:20AM MST
Inyup Kim (KAIST), Inhyung Kim (Univ. California, Berkeley), Yonghee Kim (KAIST)
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