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Conference Spotlight
2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
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Nuclear Science and Engineering
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August 2026
Fusion Science and Technology
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The human factor in licensing and operating the next generation of nuclear plants
As human factors specialists working at the intersection of human performance and nuclear operations, we are witnessing one of the nuclear sector’s most significant transitions in decades. The emergence of small modular reactors, microreactors, and other advanced designs is reshaping the industry’s landscape. Digital instrumentation and controls, passive safety systems, and increased automation are creating opportunities for greater safety margins and more flexible operation. These same features also fundamentally redefine what it means to “operate” a nuclear plant. Interactions among human roles, automation, and passive systems shape how people maintain awareness, exercise judgment, and intervene when necessary. These developments affect both operational realities and the regulatory foundations on which nuclear safety is built.
Technical Session|Space Nuclear Propulsion
Tuesday, May 6, 2025|3:15–4:55PM CDT|SPOC B (Space & Rocket Center)
Session Chair:
Tim Duquette (NASA Marshall Space Flight Center)
Track Organizer:
Harold Gerrish (NASA Marshall Space Flight Center)
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A Space Propulsion Concept Based on Inertial Confinement for Nuclear Fusion Using a Polywell Geometry
3:15–3:21PM CDT
Preeti Nair (Univ. North Dakota), Marcos Fernandez-Tous (Univ. North Dakota), Sreejith Vidhyadharan (Univ. North Dakota)
Paper
Impact of Carbon Stoichiometry on (U,Zr)C Thermophysical Properties
3:21–3:27PM CDT
J.C. Schaeperkoetter (LANL), S. Widgeon Paisner (LANL), K.J. McClellan (LANL), J.T. White (LANL), B. Taylor (NASA), J. Rosales (NASA), E. Kardoulaki (LANL)
Performance of Zrc at Conditions Relevant to Space Nuclear Propulsion
3:27–3:33PM CDT
Eddie Lopez-Honorato (ORNL), Katherine Montoya (ORNL), Wesley Jones (ORNL), Ryan Heldt (ORNL), Bryan Conry (ORNL), Brandon Wilson (ORNL), Emily Hutchins (ORNL), N. Dianne Ezell Bull (ORNL)
Nuclear Thermal Propulsion (NTP) Engine Ground Testing Status
3:33–3:39PM CDT
Lindsey Holmes (AMA), Marcus Neeley (Jacobs Space Exploration Group), James Rector (New Horizons 5)
Application of Transient Fission Chain Matrix Methodology to Multiphysics Analysis of Nuclear Thermal Rockets
3:39–3:45PM CDT
Jacob Stonehill (AMA)
Synthesis and Microstructure Evolution of Transition Element Mixed Actinide Carbides for Nuclear Thermal Propulsion
3:45–3:51PM CDT
Geronimo Robles (LANL), Shane Mann (LANL), Benjamin Walusiak (LANL), Erofili Kardoulaki (LANL), Najeb Abdul-Jabbar (LANL)
Overcoming Barriers for Reuseable Ground to Orbit Thermal Nuclear Rocketry
3:51–3:57PM CDT
Adrian Tymes (CubeCab), Trevor Hehn (Hehn Law), Troy Howe (Howe Industries), Stylianos Chatzidakis (Purdue Univ.)
Presentation Video (Visible to Attendees)
The Evolution of Inadvertent Criticality Analyses from Project Rover to Today
3:57–4:03PM CDT
Russell Johns (LANL), Andrew Prince (LANL)
Reduced-Order Neutronics: Bridging Speed and Fidelity for Real-Time Nuclear Propulsion Simulations
4:03–4:09PM CDT
Robert Demuth (Univ. South Carolina), Travis Knight (Univ. South Carolina)
ZrC-NbC-TaC Solid Solutions for Carbon-Carbon Heat Exchange Tubes for Nuclear Thermal Propulsion Fuel Elements
4:09–4:15PM CDT
Mark Opeka (Kratos SRE), Ben Kowalski (NASA Langley Research Center)
Evaluation of Candidate Carbide Coatings for Carbon-Carbon Heat Exchange Tubes for Nuclear Thermal Propulsion Applications
4:15–4:21PM CDT
Valerie Wiesner (NASA Langley Research Center), Julia Cline (NASA Langley Research Center), Elora Kurz (NASA Langley Research Center), Benjamin Kowalski (NASA Glenn Research Center), Anthony Calomino (NASA Headquarters), Christopher Hill (CvdTek)
Thermal-hydraulics Modeling for Nuclear Thermal Propulsion Simulator
4:21–4:27PM CDT
Jackson Zazzaro (Univ. South Carolina), Travis Knight (Univ. South Carolina), Ruixian Fang (Univ. South Carolina)