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NRC cuts fees by 50 percent for advanced reactor applicants
The Nuclear Regulatory Commission has announced it has amended regulations for the licensing, inspection, special projects, and annual fees it will charge applicants and licensees for fiscal year 2025.
C. R. Richey
Nuclear Science and Engineering | Volume 31 | Number 1 | January 1968 | Pages 32-39
Technical Paper | doi.org/10.13182/NSE68-A18005
Articles are hosted by Taylor and Francis Online.
A computational analysis was made for the large number of available critical experiments with hydrogenous mixtures. The calculations were made using both multigroup S4 and diffusion theory with 18 energy groups obtained with the GAMTEC-II code. Resonance capture by the isotope 240Pu was treated in the NR and NRIA approximations. Rather good agreement was found between experiment and theory. The results are given as a parametric survey for Pu densities ranging from 0.015 to 1.0 g/cm3. The calculated minimum critical mass of 239Pu is 547 g for water-reflected aqueous Pu(NO3)4 solutions and 531 g for similar mixtures of 239Pu and water.
