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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!
Latest Magazine Issues
Sep 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
Fusion Science and Technology
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
Monday, May 8, 2023|3:45–5:25PM MDT|Boise Room
Session Chair:
Austen D. Fradeneck
Session Organizer:
Alternate Chair:
Katey E. Lenox
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Development of Radiological Material Capabilities with Spark Plasma Sintering for Nuclear Thermal Propulsion
3:45–3:50PM MDT
Brandon Shaver (Univ. Tennessee, Knoxville), Steven Zinkle (Univ. Tennessee, Knoxville)
Paper
Exploring Sol-gel Methods for Producing Surrogate Radioisotope Fuels
3:50–3:55PM MDT
Emily Jane Watkinson (Univ. Leicester), C. Lakin (Univ. Leicester), M. Bromley (Lancaster Univ.), R. Wilbraham (Lancaster Univ.), Richard Ambrosi (Univ. Leicester)
Fission Surface Power 250 kWth Nuclear Reactor Simple Lithium Hydride/Tungsten Shield
3:55–4:00PM MDT
Alexis Maldonado (LANL)
Optimization of Neptunium-237 Modified Direct Denitration Production via Principal Component Analysis
4:00–4:05PM MDT
Connor J. Parker (ORNL), Kathryn M. Peruski (ORNL), Samantha K. Cary (ORNL)
Homogeneity Study of ZrC, NbC, and TaC Binary Carbide Fuels for the Application of Nuclear Thermal Propulsion
4:05–4:10PM MDT
Alex T. Nadermann (Univ. Tennessee, Knoxville), Jonas R. Kessing (Univ. Tennessee, Knoxville), Brandon Shaver (Univ. Tennessee, Knoxville), Justin Milner (NASA Glenn Research Center), Kelsa Palomores (Analytical Mechanics Assoc.), Steven J. Zinkle (Univ. Tennessee, Knoxville)
Integral Neutron and Gamma Shield Material
4:10–4:15PM MDT
Candice Kinsler-Fedon (MillenniTEK), Larry Townsend (Univ. Tennessee, Knoxville), David Blanchard (PNNL), Drew Spradling (MillenniTEK)
Atomic Alchemy Inc.'s Non-Power Production and Utilization Facility
4:15–4:20PM MDT
Thomas Eiden (Atomic Alchemy)
Challenges Facing our Space Nuclear Future
4:20–4:25PM MDT
Sara M. Sanders (Lockheed Martin Space)
Critical Experiments for Space Reactors
4:25–4:30PM MDT
Holly Trellue (LANL), Theresa Cutler (LANL), Erik Luther (LANL), Rene Sanchez (LANL)
Optical Spectroscopy and Online Monitoring for the Plutonium-238 Supply Program
4:30–4:35PM MDT
Luke R. Sadergaski (ORNL), Hunter B. Andrews (ORNL), Tom D. Hylton (ORNL), Laetitia H. Delmau (ORNL), Adam J. Parkison (ORNL)
Multivariate Chemometrics and Spectrophotometry for the Quantification of Aqueous Neptunium Processing Streams for the Plutonium-238 Supply Program
4:35–4:40PM MDT
Hunter B. Andrews (ORNL), Luke R. Sadergaski (ORNL)
Non-Nuclear Instrumentation and Controls Demonstration Test Facility
4:40–4:45PM MDT
N. Dianne Bull Ezell (ORNL), Brandon Wilson (ORNL), Wesley Williams (ORNL)
Commercially Available Yttrium and Zirconium Hydrides
4:45–4:50PM MDT
Gavin Garside (Ultra Safe Nuclear), Kurt Terrani (Ultra Safe Nuclear)
Subtleties in the Impacts of NTP Conditions Based on Fuel Element Power Peaking During Operation
4:50–4:55PM MDT
Vishal Patel (Ultra Safe Nuclear)
Design Options to Address Submersion Incident Criticality LEU NTP Core
4:55–5:00PM MDT
Michael Moore (MIT), Koroush Shirvan (MIT), Steven Hoak (MIT)
Safety Studies for the ESA Radioisotope Power Systems
5:00–5:05PM MDT
Alessandra Barco (Univ. Leicester), Richard M. Ambrosi (Univ. Leicester), Hannah Sargeant (Univ. Leicester), Frédéric Lattwein (ArianeGroup), Christophe Fongarland (ESA/ESTEC)
Subscale Maturation of Advanced Ultra-High Temperature Reactor Technologies
5:05–5:10PM MDT
Tony S. Hill (Starr Nuclear)
Use of an Americium-Based Dynamic Radioisotope Power System (DRPS) for a Long Duration Lunar Science Rover
5:10–5:15PM MDT
Steven Oleson (NASA Glenn Research Center), Paul Schmitz (Power Computing Solutions), Richard M. Ambrosi (Univ. Leicester), Ramy Mesalam (Univ. Leicester), Alessandra Barco (Univ. Leicester), Emily Jane Watkinson (Univ. Leicester), Elizabeth Turnbull (NASA Glenn Research Center)
An Instrumented System to Study High Pressure-Composition-Temperature Phase Relations
5:15–5:20PM MDT
A.P. Shivprasad (LANL), M.A. Torrez (LANL), J.R. Torres (LANL), T.S. Smith (LANL), C.A. Kohnert (LANL), T.A. Saleh (LANL)
Advanced Moderator Cladding Development
5:20–5:25PM MDT
A.P. Shivprasad (LANL), C.A. Kohnert (LANL), E.P. Luther (LANL), D.V. Rao (LANL)
Theory and Design of the Fusion Accelerating Spacecraft
5:25–5:30PM MDT
Ryan A. Revolinsky (Univ. Michigan), Elijah J. Wilson (Univ. Michigan), Adam N. Brusstar (Univ. Michigan), Tim DeFranco (Univ. Michigan), Dean R. Price (Univ. Michigan), Joseph Lorenzetti (Univ. Michigan)
Design of an Irradiation Facility at MITR to Demonstrate NTP Operation Sequence
5:30–5:35PM MDT
Nesrin Cetiner (MIT), Gyutae Park (MIT), Koroush Shirvan (MIT), Lance Snead (MIT), David Carpenter (MIT), Gordon Kohse (MIT)
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