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The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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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.
M. M. R. Williams
Nuclear Science and Engineering | Volume 112 | Number 3 | November 1992 | Pages 215-230
Technical Paper | doi.org/10.13182/NSE92-A29070
Articles are hosted by Taylor and Francis Online.
The physical and mathematical problems associated with radioactive waste disposal have been outlined and discussed. Some of the more important relationships and equations have been derived and explained with a view to showing how techniques developed in conventional reactor physics problems can be applied with great effect to radionuclide transport. We stress in particular the problems associated with radionuclide transport through spatially random media such as fissured and porous rock. Three distinct modeling procedures are presented: (1) the classical advective dispersion equation and its interpretation as a stochastic differential equation, (2) a purely advective approach in which the groundwater velocity and the retardation factor are random functions, and (3) an analogy with neutron transport by regarding motion along fissures and subsequent branching as a pseudo-scattering process. We describe the mathematical methods needed to solve these stochastic problems and include perturbation theory, Novikov’s theorem and the marked Brownian particle. The relationship between the methods and the non-Fickian behavior that results are discussed and used to explain the scale-dependent experimental results for the dispersion coefficient. In general, the paper attempts to be instructive in that several results are presented which are not new, but also creative in that these results are presented in a new light. Two new models are also discussed and their advantages and shortcomings outlined.