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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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
January 2026
Nuclear Technology
December 2025
Fusion Science and Technology
November 2025
Latest News
Seconds Matter: Rethinking Nuclear Facility Security for the Modern Threat Landscape
In today’s rapidly evolving threat environment, nuclear facilities must prioritize speed and precision in their security responses—because in critical moments, every second counts. An early warning system serves as a vital layer of defense, enabling real-time detection of potential intrusions or anomalies before they escalate into full-blown incidents. By providing immediate alerts and actionable intelligence, these systems empower security personnel to respond decisively, minimizing risk to infrastructure, personnel, and the public. The ability to anticipate and intercept threats at the earliest possible stage not only enhances operational resilience but also reinforces public trust in the safety of nuclear operations. Investing in such proactive technologies is no longer optional—it’s essential for modern nuclear security.
Technical Session|Computational Thermal Hydraulics
Monday, August 21, 2023|1:30–3:10PM EDT|Columbia 1
Session Chair:
Jun Liao (Westinghouse Electric Co.)
Alternate Chair:
Igor A. Bolotnov
Session Organizer:
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Implementation of a Three-Field Framework in TRACE to Improve the Prediction of Reactor Core Reflood Conditions Part I
1:30–1:50PM EDT
Matthew Bernard (U.S. Nuclear Regulatory Commission), Stephen Bajorek (U.S. Nuclear Regulatory Commission)
Paper
Implementation of a Three-Field Framework in TRACE to Improve the Prediction of Reactor Core Reflood Conditions Part II
1:50–2:10PM EDT
Omar S. Al-Yahia (Paul Scherrer Institute), Matthew Bernard (U.S. Nuclear Regulatory Commission), Ivor Clifford (Paul Scherrer Institute), Gregory Perret (Paul Scherrer Institute), Stephen Bajorek (U.S. Nuclear Regulatory Commission), Hakim Ferroukhi (Paul Scherrer Institute)
Analysis of a Selected Experiment of the OSU-MASLWR Test Facility Regarding the Heat Transfer in Helically Coiled Steam Generators Using AC²-ATHLET
2:10–2:30PM EDT
Julia Krieger (Ruhr-Universität Bochum), Christoph Bratfisch (Ruhr-Universität Bochum), Marco K. Koch (Ruhr-Universität Bochum)
Numerical Evaluation of the Thermal-Hydraulic Effect due to the Thermal Expansion Behavior of Fuel Subassembly
2:30–2:50PM EDT
Liancheng Guo (GRS), Armin Seubert (GRS), Philipp Schöffel (GRS)
Presented by Sebastian Buchholz (GRS)
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