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Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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2024 ANS Winter Conference and Expo
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Orlando, FL|Renaissance Orlando at SeaWorld
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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
Weston M. Stacey, Jr.
Nuclear Science and Engineering | Volume 47 | Number 1 | January 1972 | Pages 29-39
Technical paper | doi.org/10.13182/NSE72-A28418
Articles are hosted by Taylor and Francis Online.
The influence of wide scattering resonances on group-averaged uranium and plutonium resonance cross sections and on group elastic removal cross sections is examined; the consequences for a Bondarenko-type LMFBR multigroup cross-section scheme are discussed. An analytical expression is derived for a constant effective cross section which adequately accounts for the sodium resonance in the computation of group-averaged uranium and plutonium resonance cross sections. Analytical expressions are derived for the group elastic removal cross sections, also. These latter are superior to the Bondarenko prescriptions in that they account for the location of a scattering resonance within a group and thus account for both the relative probability that a neutron scattered in the resonance will be scattered out of the group and for the relative flux shape within the group. The composition dependence of these expressions is shown to be characterized by a single parameter. Numerical results are presented for compositions that are typical of proposed LMFBRs.
