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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott 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
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
July 2025
Fusion Science and Technology
Latest News
Nuclear fuel cycle reimagined: Powering the next frontiers from nuclear waste
In the fall of 2023, a small Zeno Power team accomplished a major feat: they demonstrated the first strontium-90 heat source in decades—and the first-ever by a commercial company.
Zeno Power worked with Pacific Northwest National Laboratory to fabricate and validate this Z1 heat source design at the lab’s Radiochemical Processing Laboratory. The Z1 demonstration heralded renewed interest in developing radioisotope power system (RPS) technology. In early 2025, the heat source was disassembled, and the Sr-90 was returned to the U.S. Department of Energy for continued use.
Panel and Technical Session|Thermal Hydraulics
Friday, April 14, 2023|1:35–2:55PM EDT|Student Union 262A
Session Chair:
Sean Kosslow (Univ. Tennessee, Knoxville)
Alternate Chair:
Teja Vallabhaneni (Univ. Tennessee, Knoxville)
Session Organizer:
Lance M. Drouet (Univ. Tennessee, Knoxville)
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Pressure Drop Measurements of Twisted Tape Inserts with Smaller Widths for Advanced Reactor Applications
1:35–1:55PM EDT
Arturo Cabral (Virginia Commonwealth Univ.), Cody S. Wiggins (ORNL), Lane B. Carasik (Virginia Commonwealth Univ.)
Paper
Turbulence Initiating Mechanisms During the Laminar-Turbulent Transition Flow Regime in Rod Bundles
1:55–2:15PM EDT
Luiz C. Aldeia Machado (Penn State), Carolina da Silva Bourdot Dutra (Penn State), Sean P. Bistany (Penn State), Elia Merzari (Penn State)
High Fidelity Modeling to Inform Safety Analysis Codes for Heat Pipe Microreactors
2:15–2:35PM EDT
Carolina da Silva Bourdot Dutra (Penn State), Elia Merzari (Penn State)
Simulations to Understand Thermal Performance of Helically Rifled Heat Transfer Enhancements for Molten Salts
2:35–2:55PM EDT
James Vulcanoff (Virginia Commonwealth Univ.), Ryan P. McGuire (Virginia Commonwealth Univ.), Lane B. Carasik (Virginia Commonwealth Univ.)
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