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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.
Rolf Bünde
Fusion Science and Technology | Volume 14 | Number 1 | July 1988 | Pages 197-217
Technical Paper | Net Overview | doi.org/10.13182/FST88-A25159
Articles are hosted by Taylor and Francis Online.
To achieve its targets in reasonable time, the Next European Torus (NET) must be operated with considerable reliability and availability (R&A). Therefore, failure modes, effects, and criticality analysis (FMECA) of the overall plant and of its major components is already being performed as the design evolves. The present status of the R&A work is described in four steps: First, the R&A targets envisaged for the NET operation are discussed. Then an FMECA covering the overall plant is described, and a more detailed FMECA of major components is presented concerning the toroidal field coil system; plasma heating systems; protection, instrumentation, and control system; first wall and blanket, as well as the cooling system. Finally, the R&A results are compared with the targets, and measures for improvements are given.