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NNSA awards BWXT $1.5B defense fuels contract
The Department of Energy’s National Nuclear Security Administration has awarded BWX Technologies a contract valued at $1.5 billion to build a Domestic Uranium Enrichment Centrifuge Experiment (DUECE) pilot plant in Tennessee in support of the administration’s efforts to build out a domestic supply of unobligated enriched uranium for defense-related nuclear fuel.
H. Moriyama, Y. Asaoka, Y. Ito
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1046-1050
Blanket Technology | doi.org/10.13182/FST91-A29481
Articles are hosted by Taylor and Francis Online.
The rate of tritium recovery from liquid lithium by molten salt extraction was measured. The mass balance of tritium was always good during extraction and the overall mass transfer coefficient was evaluated. The dependences of the mass transfer coefficient on salt and temperature are explained by considering the predominant resistence to the mass transfer in the salt phase. The semi-empirical equation is given by KM* (cm/s) = 2.2×10−4(T(K)/µsalt (cp))1/2 where µsalt is the viscosity of salt.
The reference scheme of molten salt extraction is re-evaluated with the newly obtained data. Not only from the thermodynamic but also from the kinetic points of view, it is shown that a design goal of the tritium concentration of 1 wppm in lithium would be reached by combining a reasonable number of extractor units. A mixer-settler with mechanical stirrer may be sufficient for the extractor.
