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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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Nuclear Science and Engineering
September 2025
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October 2025
Latest News
Empowering the next generation: ANS’s newest book focuses on careers in nuclear energy
A new career guide for the nuclear energy industry is now available: The Nuclear Empowered Workforce by Earnestine Johnson. Drawing on more than 30 years of experience across 16 nuclear facilities, Johnson offers a practical, insightful look into some of the many career paths available in commercial nuclear power. To mark the release, Johnson sat down with Nuclear News for a wide-ranging conversation about her career, her motivation for writing the book, and her advice for the next generation of nuclear professionals.
When Johnson began her career at engineering services company Stone & Webster, she entered a field still reeling from the effects of the Three Mile Island incident in 1979, nearly 15 years earlier. Her hiring cohort was the first group of new engineering graduates the company had brought on since TMI, a reflection of the industry-wide pause in nuclear construction. Her first long-term assignment—at the Millstone site in Waterford, Conn., helping resolve design issues stemming from TMI—marked the beginning of a long and varied career that spanned positions across the country.
Technical Session|Sponsored by THD
Wednesday, November 18, 2020|12:00–2:10PM EST
Session Chair:
Dillon R. Shaver
Alternate Chair:
Elia Merzari (Penn State)
Session Organizer:
Igor A. Bolotnov (NCSU)
Staff Producer:
Erica McGowan (American Nuclear Society)
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Verification of Transient Simulations Using the SAS4A/SASSYS-1 Coupled Channel Interface
Daniel O'Grady (Argonne National Laboratory), Guanheng Zhang (Argonne National Laboratory), Thomas H. Fanning (Argonne National Laboratory), Rui Hu (Argonne National Laboratory), Guojun Hu (Argonne National Laboratory), Thanh Q. Hua (Argonne National Laboratory), Acacia J. Brunett (Argonne National Laboratory)
Paper
Joint SAS4A/SASSYS-1 Development for Lead Cooled Fast Reactor Safety Analysis
Anton Moisseytsev (ANL), Thomas H. Fanning (ANL), Daniel O’Grady (ANL), Thanh Quoc Hua (ANL), Adrian M. Tentner (ANL), Aydin Karahan (ANL), Acacia J. Brunett (ANL), Tanju Sofu (ANL), Michael Epstein (Fauske & Associates, LLC), Sung Jin Lee (Fauske & Associates, LLC), Daniel L. Wise (Westinghouse Electric Co.), Paolo Ferroni (Westinghouse Electric Co.), Jun Liao (Westinghouse Electric Company)
Implementation of an Extended Reactor Vessel Heat Rejection Modeling Capability in SAS4A/SASSYS-1
Thomas H. Fanning (Argonne National Laboratory), Acacia J. Brunett (Argonne National Laboratory), Daniel O'Grady (Argonne National Laboratory)
NekRS: Massively parallel fluid flow simulations in reactor cores
Elia Merzari (Pennsylvania State University), Misun Min (Argonne National Laboratory), Yu-Hsiang Lan (Argonne National Laboratory), Stefan Kerkemeier (Argonne National Laboratory), Paul Fischer (University of Illinois)
Statistical Uncertainties of Passive Scalars in a Direct Numerical Simulation of Low-Prandtl Fluid Flow over a Backward Facing Step
Iztok Tiselj (Jožef Stefan Institute), Jure Oder (Jozef Stefan Institut)
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