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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Sellafield awards $3.86B in infrastructure contracts to three companies
Sellafield Ltd., the site license company overseeing the decommissioning of the U.K.’s Sellafield nuclear site in Cumbria, England, announced the award of £2.9 billion (about $3.86 billion) in infrastructure support contracts to the companies of Morgan Sindall Infrastructure, Costain, and HOCHTIEF (UK) Construction.
Keiji Kobayashi, Junnosuke Horie, Keiji Kanda, Toshikazu Shibata
Nuclear Science and Engineering | Volume 71 | Number 2 | August 1979 | Pages 143-153
Technical Paper | doi.org/10.13182/NSE79-A20405
Articles are hosted by Taylor and Francis Online.
Measurement of the reactivity effect due to substitution of metallic thorium for the core elements in a critical assembly has been made as part of the preliminary experiment for an intermediate reactor by using the multiregion critical core. The results of criticality calculations have been in good agreement with experiments in the case of the core without thorium, although the calculated neutron multiplication factor has been ∼2% larger than the experimental value for the core with thorium.