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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.
Dr K G Harrison, J C Waldron, J A B Gibson
Fusion Science and Technology | Volume 14 | Number 2 | September 1988 | Pages 1054-1057
Measurement of Tritium | doi.org/10.13182/FST88-A25277
Articles are hosted by Taylor and Francis Online.
A prototype discriminating HT/HTO monitor was loaned to Harwell by CRNL to evaluate for possible use at the JET facility in the UK. The instrument was exposed to pure HT and HTO inputs at various concentrations, and its readings compared with those of a non-discriminating Harwell Ion Chamber (Model 1528) connected in series at the input. The rate of response, accuracy, separation factors and possible memory effects were studied at various humidities at ambient temperature, and the effects of varying process- and sample-air rates were investigated. Generally, the instrument was found to work well, although the response times for the HTO channel were generally rather slow (20–30 min to 90% of its asymptotic value), so that central sampling of a number of points in sequence via sampling lines and a manifold would be slow.