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ANSI/ANS-2.27-2020 (R2025)
Criteria for Investigations of Nuclear Facility Sites for Seismic Hazard Assessments (reaffirmation of ANSI/ANS-2.27-2020)
This standard provides criteria and guidelines for conducting geological, seismological, geophysical, and geotechnical investigations needed to provide information to support the following: (1) seismic source characterization input to a probabilistic seismic hazard analysis (PSHA); (2) evaluation of tectonic permanent ground deformation hazard using probabilistic fault displacement hazard analysis for surface-faulting sources and probabilistic tectonic deformation hazard analysis for blind fault sources; (3) site response analysis input to PSHAs; (4) nontectonic, earthquake-induced ground failure hazard; (5) foundation stability.
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American National Standards Institute [ansi]