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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
September 2026
Nuclear Technology
Fusion Science and Technology
August 2026
Latest News
Oklo’s Isotope Test Reactor achieves criticality
Oklo’s Groves Isotope Test Reactor became the fifth Department of Energy–authorized reactor to achieve criticality under the agency’s authorization process, it was announced earlier today.
Criticality was reached at 9:19 p.m. (EDT) on Wednesday at the company’s Groves facility in Lockhart, Texas, according to the DOE.
Technical Session|Radioisotope Power Systems
Monday, May 5, 2025|1:00–2:40PM CDT|Salon EF (Marriott)
Session Chair:
David Frate (NASA Glenn Research Center)
Track Organizer:
Harold Gerrish (NASA Marshall Space Flight Center)
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Risk Analysis of Radiological Release from Pu-238 Production Targets During Manual Handling
1:00–1:25PM CDT
Daniel K. Sluder (INL), Igor A. Sarygin (INL), Jacob L. Westacott (INL), Matthew D. Horkley (INL)
Paper
Chemical Processing Waste Remediation in the Plutonium-238 Supply Program
1:25–1:50PM CDT
Briana R. Schrage (ORNL), Jisue Moon (ORNL), Ethan Villarreal (Virginia Commonwealth Univ.), Sam Cummings (ORNL), Doug Crawford (ORNL), Kristian G. Myhre (ORNL), Adam J. Parkison (ORNL)
Materials Characterization Capabilities for the Plutonium-238 Supply Program
1:50–2:15PM CDT
Kathryn M. Peruski (ORNL), Connor J. Parker (ORNL), Samantha K. Cary (ORNL), Chris L. Jensen (ORNL), Adam J. Parkison (ORNL)
Capabilities for Studying Temperature Dependence in Optical Spectra of Actinides in Support of the Plutonium-238 Supply Program
2:15–2:40PM CDT
Sara E. Gilson (ORNL), Luke R. Sadergaski (ORNL), Hunter B. Andrews (ORNL), Adam J. Parkison (ORNL)