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:
o 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 the probabilistic ground motion level and controlling earthquakes. Appendix D dis cusses site-specific geological, seismological, and "The guides we issued In the following ten broad divisions: 1. Power Reactors 2. .Research and Test Reactors & Fuels and Materials Facilities 4. Environmental and Siting & Materials and Plant Protection 6. Products 7. Transportation 8. Occupational Health 9. Antilrust and Financial Review 10. General Sinogle copies of regulatory guides may be obtained hre of charge by writng the Office of Administration. Attention: Distribution end Moi Services Section, U.S. Nuclear Regulatory Cornmission Washinglon. DC 20555-0001; or by fla at (301)4162260. issued guides may also be purchased from the National Technical Information Service on a standing order basis. Dleails on this service may be obtained by writing NTIS, 5285 Port Royal Road, Springf•eld, VA 22161. geophysical investigations. Appendix E describes a method to confirm the adequacy of existing seismic sources and source parameters as the basis for deter mining the SSE for a site. Appendix F describes pro cedures to determine the SSE. The information collections contained in this regu latory guide are covered by the requirements of 10 CFR Part 50, which were approved by the Office of Manage ment and Budget, approval number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to respond to, a collection of information un less it displays a currently valid OMB control number. B. DISCUSSION BACKGROUND A probabilistic seismic hazard analysis (PSHA) has been identified in 10 CFR 100.23 as a means to de termine the SSE and account for uncertainties in the seismological and geological evaluations. The rule fur ther recognizes that the nature of uncertainty and the ap