ANS 2.27 PDF download

ANS 2.27 – Criteria for Investigations of Nuclear Facility Sites for Seismic Hazard Assessments

ANS 2.27-2020 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.

Keywords: advanced light water reactors (ALWR), natural phenomenon, nuclear power plant design, siting, seismic hazards, nuclear facility siting, site evaluation, faults seismic sources