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Risk Assessment and Safety Analysis for Commercial Nuclear Reactors
Published in Kenneth D. Kok, Nuclear Engineering Handbook, 2016
The last commercial nuclear power plant OL was issued in 1993. Since then, the US nuclear industry went into a “dormant period,” and only recently has the momentum for building new nuclear power plants resurged. Specifically, 28 new plants at 19 sites are proposed by the nuclear industry. The new plants are based on five different reactor designs: GE nuclear energy economic simplified boiling water reactor (ESBWR, 1500 MWe): currently under the NRC staff reviewGE Nuclear Energy Advanced Boiling Water Reactor (ABWR, 1350 MWe): design approved in July 1994 and certified in May 1997Westinghouse Advanced Pressurized Water Reactor (APWR): System 80+ standard plant design approved in July 1994 and certified in May 1997Westinghouse standard plant design AP-1000, 1000 MWe: design approved in September 2004; also, AP-600 (600 MWe) standard plant design: design approved in September 1998 and certified in December 1999AREVA’s European Evolutionary Pressurized Reactor (EPR, 1600 MWe): currently under NRC staff review
Cooling Reactors
Published in Geoffrey F. Hewitt, John G. Collier, Introduction to Nuclear Power, 2018
Geoffrey F. Hewitt, John G. Collier
Evolutionary designs are extensions of existing PWR and BWR plants building upon past experiences and using proven components but with enhanced safety features designed to reduce the probability of accidents and to mitigate their consequences. Specific examples of these plants and their vendors are the European pressurized water reactor—EPR (NPI); System 80 plus(™)/BWR 90 (ABB); ABWR (GE); and Sizewell B/APWR (Westinghouse/Mitsubishi).
Transient Simulations of CPR1000 Nuclear Power Plant Implementing Advanced Mechanical Shim Control System
Published in Nuclear Science and Engineering, 2018
Shifa Wu, Jiashuang Wan, Hongbing Song, Xinyu Wei, Fuyu Zhao, Shripad Revankar
A possible approach for CPR1000 to overcome the above drawbacks is to adopt the mechanical shim (MSHIM) control system for reactor power control. The MSHIM, proposed by Westinghouse and successfully implemented in AP600, AP1000, and System 80+, has proven to have better control performance on operational transients and load-follow maneuvers only by moving control rod banks and with no need to change soluble boron concentrations.3–7 The MSHIM control system consists of M-banks and AO (axial offset)-banks, responsible for reactor power control and axial power distribution control, respectively. Therefore, it is of great significance to explore the feasibility of implementing the MSHIM control system on the CPR1000 reactor power control.