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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.
Gunzo Uchiyama, Shinobu Hotoku, Sachio Fujine, Mitsuru Maeda
Nuclear Technology | Volume 122 | Number 2 | May 1998 | Pages 222-227
Technical Paper | Enrichment | doi.org/10.13182/NT98-A2864
Articles are hosted by Taylor and Francis Online.
The kinetics of the reaction between Np(VI) and butyraldehyde isomers in nitric acid solution was studied to find flow-sheet conditions of the Np separation process from U and Pu. Iso-butyraldehyde was found to have a higher reduction rate than n-butyraldehyde. The former reduction rate at T = 283 to 323 K is described by the following equation:-d[Np(VI)]/dt= 6.0 × 106exp(-4.1 × 103/T)× [Np(VI)][iso-C3H7CHO]0[H+] (M/min).The latter reduction rate is described by the following equation:-d[Np(VI)]/dt= 4.2 × 104exp(-3.4 × 103/T)× [Np(VI)][n-C3H7CHO]0[H+] (M/min).
