Seismic Analysis of Safety-Related Nuclear Structures and Commentary

This standard provides requirements for performing analyses of new structure design or existing structure evaluation to determine the reliability of structures under earthquake motions. Rules and analysis parameters that are expected to produce seismic responses with about the same probability of non-exceedance as the input are outlined. Specifications of input motions are provided. Analysis standards are given for: modeling of structures; analysis of structures; soil-structure interaction modeling and analysis; input for subsystem seismic analysis; and special structures such as buried pipes and conduits, earth-retaining walls, above-ground vertical tanks, raceways, and seismic-isolated structures. Additionally, non-mandatory Appendix A provides a discussion on Seismic Probabilistic Risk Assessments and Seismic Margin Assessments.