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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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.
S. I. Bhuiyan, F. U. Ahmed, A. S. Mollah, M. A. Rahman
Nuclear Technology | Volume 93 | Number 3 | March 1991 | Pages 357-361
Technical Paper | Nuclear Fuel Cycle | doi.org/10.13182/NT91-A34529
Articles are hosted by Taylor and Francis Online.
The neutron shielding properties of ilmenite-magnetite (I-M) concrete are measured experimentally. The instantaneous relaxation length and thickness-dependent removal cross section of neutrons from a 252Cf source penetrating I-M concrete with and without a cadmium sheet are reported. An empirical formula is developed to calculate the thickness dependence of the removal cross section and the related coefficients are reported. The results illustrate the effectiveness of I-M concrete so far as its shielding properties are concerned. This material can be used to shield reactors, accelerators, X-ray installations, and radioactive sources used for commercial purposes.
