ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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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
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.
Technical Session|Sponsored by Advanced/Novel Materials
Thursday, December 14, 2023|1:00–2:40PM CST|Galerie 5
Session Chair:
Janelle P. Wharry (Purdue Univeristy)
Track Organizers:
Kevin G. Field (Univ. Michigan)
Grace Burke (INL)
Benjamin Sutton (Electric Power Research Institute (EPRI))
Alternate Chair:
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Development of a Weldable Ni-30Cr Filler Metal 52XL for Nuclear Applications
1:00–1:40PM CST
C. Fink (Ohio State), A. Hope (Thermo-Calc Software), S.L. McCracken (EPRI), J.C. Lippold (Ohio State)
Paper
Mechanical Properties and Deformation Mechanisms of Electron Beam Welded PM-HIP Reactor Pressure Vessel Steels
1:40–2:00PM CST
E.H. Marrero (Purdue), G. Nemets (Purdue), J. Emerson (Purdue), Z. Shang (Purdue), Y. Lu (Boise State), M.A. Okuniewski (Purdue), J.P. Wharry (Purdue)
Effect of Laser Welding on the Microstructure and Mechanical Properties in Ion-Irradiated MA956
2:00–2:20PM CST
E. Getto (U.S. Naval Academy), S. Stokes (U.S. Naval Academy), M. Swenson (Univ. Idaho)
Synchrotron X-ray Diffraction Characterization of the Phase Transformation Behaviors Induced by Electron Beam Welding in SA508 Reactor Pressure Vessel Steels
2:20–2:40PM CST
J. Emerson (Purdue), G. Nemets (Purdue), E.H. Marrero (Purdue), M. Topsakal (Brookhaven), S. Gill (Brookhaven), J.P. Wharry (Purdue), M.A. Okuniewski (Purdue)
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