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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.
M. Podowski
Nuclear Science and Engineering | Volume 72 | Number 2 | November 1979 | Pages 256-261
Technical Paper | doi.org/10.13182/NSE79-A19470
Articles are hosted by Taylor and Francis Online.
The question of general asymptotic stability is considered for N-order coupled-core reactors neglecting neutron coupling time lag, but with general nonlinear reactivity functionals. Stability criteria, applicable to models with reactivity coupling effects, are established. As an illustration of the general results, the linear reactivity feedback model is investigated. In particular, a two-node model with temperature coupling effects is discussed in more detail.
