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California bill looks to craft advanced nuclear exception to moratorium
Proposed legislation in California could exempt certain reactor designs from the state’s long-standing moratorium on new nuclear power plants, effectively ending the moratorium.
California Assembly Member Lisa Calderon (D., 56th Dist.) filed A.B. 2647 with the California State Assembly last week.
If approved, the bill could pave the way to increasing the number of nuclear reactors in the state in the future. Currently, Diablo Canyon nuclear power plant houses the only operational commercial nuclear reactors in California.
L. R. Cornejo, B. S. Collins, S. G. Stimpson, A. M. Graham
Nuclear Science and Engineering | Volume 195 | Number 8 | August 2021 | Pages 890-905
Technical Paper | doi.org/10.1080/00295639.2021.1877503
Articles are hosted by Taylor and Francis Online.
For full-core modeling in the Virtual Environment for Reactor Analysis (VERA), the three-dimensional multigroup eigenvalue neutron transport problem is solved by MPACT. To improve the efficiency of MPACT, advancements have been made in the transport accelerator. Multilevel-in-energy and multilevel-in-space coarse mesh finite difference (CMFD) solvers were developed to improve the efficiency of the CMFD accelerator. In this paper a new multilevel-in-space-and-energy CMFD solver is developed with coarsening in both space and energy on every level. Several different strategies are investigated for coarsening groups in energy. Modified V-cycle and multiple-cycle algorithms are evaluated for solving the multilevel equations. The performance of these solvers is compared for typical full-core reactor physics problems.