Document: NRC Regulatory Guide
Document ID: cfc61809-5745-460f-8a26-13c168659924
Document Type: regulatory_guide
Title: Identification and Characterization of Seismic Sources and Determination of Safe Shutdown Earthquake Ground Motion
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740084.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.165
CFR Part: 
CFR Title: 

Content:
g specific problems orpoe Uated accidents, and data needed by he NRC staff In Its review of applicatiors for per mits aid licenses. Regulatory guides we not substitutes for regulations, and compliance with themn Is not required. Methods and aloutions different from those set out In the Ogides will be acceptable I #W provide a basis for the f•wngs requisfte to the issuance or con. tiriance of a permit or icense by fth Commission. This guide was issued after consideration of comments received trom the public. Com ments and suggestlons for rmprovements In these guides reancouraged at anlnts, and guides will be revlseds appropriate, to scomrnodste comments and to ref:ect now in formation or aperlence. Written commerts may be submrted to fte Rules Review and Directives Branch. CFIPS, ADM, U.S. Nuclear Regulatory Commission, Washington. DC 20555-0001. sign bases for seismically induced floods and water waves, and other design conditions. In 10 CFR 100.23, paragraph (dX1), "Determina tion of the Safe -Shutdown Earthquake Ground Mo tion," requires that uncertainty inherent in estimates of the SSE be addressed through an appropriate analysis, such as a probabilistic seismic hazard analysis or suit able sensitivity analyses. This guide has been developed to provide general guidance on procedures acceptable to the NRC staff for (1) conducting geological, geophysical, seismological, and geotechnical investigations, (2) identifying and characterizing seismic sources, (3) conducting proba bilistic seismic hazard analyses, and (4) determining the SSE for satisfying the requirements of 10 CFR 100.23. This guide contains several appendices that ad dress the objectives stated above. Appendix A con tains a list of definitions of pertinent terms. Appendix B describes the procedure used to determine the refer ence probability for the SSE exceedance level that is acceptable to the staff. Appendix C discusses the de velopment of a seismic hazard information base and the determination of