Seismic design of the ABB-CE System 80+ Standard Plant for a site envelope

This paper provides a summary of the design parameters used in the seismic design of the ABB Combustion Engineering System 80+ Standard Plant. The System 80+ seismic design is developed with the objective of having a standard design which would envelop the majority of sites in the world with the possible exception of sites near major active faults in areas of known high seismicity. The seismic design basis was developed based on the current state-of-the-art as well as consideration for both current and anticipated future Nuclear Regulatory guidance. The paper discusses seismic design requirements, selection of generic soil sites, selection of design control motions, soil-structure interaction analyses, and site acceptance criteria for the plant