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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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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.
H. W. Kugel, C. W. Barnes, J. Gilbert, J. Greco, K. W. Hill, D. L. Jassby, L. C. Johnson, L. P. Ku, J. Levine, R. W. Motley, J. D. Strachan
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1989-1995
Neutronic | Proceedings of the Ninth Topical Meeting on the Technology of Fusion Energy (Oak Brook, Illinois, October 7-11, 1990) | doi.org/10.13182/FST91-A29633
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Radiation measurements were made during recent high power, high neutron yield experiments, and used to calibrate the neutronics simulation of the radiation shielding system. The results indicate that the present radiation shielding is more effective than predicted by the initial design estimates. This is attributed to the effects of changes in the experimental configuration since the initial design and to the design margin included to accommodate initial uncertainties in material properties and distributions. With the present radiation shielding, the production of 5 × 1020 D-T neutrons/yr will result in a total annual dose equivalent at the PPPL property line of less than the 10 mrem/yr design objective.
