ANSI/ANS 2.27-2008

This standard provides criteria and guidelines for conducting geological, seismological, and geotechnical investigations needed to provide information to support:seismic source characterization input to a probabilistic seismic hazard analysis (PSHA);evaluation of surface fault rupture hazard;site response analysis; andseismic-induced ground failure hazard.These criteria are applicable for SDC-3, SDC-4, and SDC-5 SSCs.

This standard does not address the use of PSHA results or the selection of design basis events for nuclear facilities. These topics are covered in ANSI/ANS-2.26-2004 and ASCE/SEI 43-05, a - Seismic Design Criteria for Structures, Systems, and Components.