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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Deep geologic repository progress—2025 Update
Editor's note: This article has was originally published in November 2023. It has been updated with new information as of June 2025.
Outside my office, there is a display case filled with rock samples from all over the world. It contains a disk of translucent, orange salt from the Waste Isolation Pilot Plant near Carlsbad, N.M.; a core of white-and-bronze gneiss from the site of the future deep geologic repository in Eurajoki, Finland; several angular chunks of fine-grained, gray claystone from the underground research laboratory at Bure, France; and a piece of coarse-grained granite from the underground research tunnel in Daejeon, South Korea.
Paul Dinner, Max Chazalon, Dain Evans, Friedrich Fauser, Markus Iseli, Chung Hsiung Wu
Fusion Science and Technology | Volume 14 | Number 1 | July 1988 | Pages 178-186
Technical Paper | Net Overview | doi.org/10.13182/FST88-A25157
Articles are hosted by Taylor and Francis Online.
In a steady-state operation, the Next European Torus fuel system must process more than 20 mol/h of gas with minimal production of solid wastes and environmental releases. Requirements, operating conditions, and resulting options for plasma exhaust and fuel processing are discussed. An integrated process for exhaust pumping, impurity removal, and impurity processing is outlined. This process is based as much as possible on proven elements, or those under intensive investigation in fusion facilities around the world. The integration of a cryogenic roughing pump with helium pump-through and total reflux of the electrolyzer products are novel process enhancements.