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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.
R. N. Hwang
Nuclear Science and Engineering | Volume 96 | Number 3 | July 1987 | Pages 192-209
Technical Paper | doi.org/10.13182/NSE87-A16381
Articles are hosted by Taylor and Francis Online.
A rigorous method for representing the multilevel cross sections and its practical applications are described. It is a generalization of the rationale suggested by de Saussure and Perez for the s-wave resonances. The rationale can be interpreted as the natural consequences of the important physical condition that the collision matrices must be single valued and meromorphic in momentum space. Thus, the latter can be rigorously represented by rational functions with simple poles in √E domain for all states. Such representation is especially attractive when it is used in conjunction with the applications of the R-matrix parameters and the subsequent Doppler broadening using Solbrig’s kernel. A computer code WHOPPER has been developed to convert the Reich-Moore parameters into the pole and residue parameters in momentum space. Sample calculations have been carried out to illustrate that the proposed method preserves the rigor of the Reich-Moore cross sections exactly. An analytical method has been developed to evaluate the pertinent Doppler-broadened line shape functions. Since the principal parts of these functions are identical to the widely used ψ and χ functions when applied to the energy region above 1 eV, the method is readily amenable to many existing processing codes. A discussion is presented on how to minimize the number of pole parameters so that the existing reactor codes can be best utilized.