Document: NRC Regulatory Guide
Document ID: 37f53017-d71c-4f3c-a2a4-ab67a8270066
Document Type: regulatory_guide
Title: Pre-Earthquake Planning, Shutdown, and Restart of a Nuclear Power Plant Following an Earthquake (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1826/ML18268A185.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.166
CFR Part: 
CFR Title: 

Content:
termine the need to shut down a nuclear power plant; and the short- and long-term processes, inspections, and tests to demonstrate that a nuclear power plant is safe for restarting after a shutdown in response to an earthquake. Applicability This RG applies to applicants and licensees under Title 10 of the Code of Federal Regulations (10 CFR) Part 50, “Domestic Licensing of Production and Utilization Facilities” (Ref. 1), 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants” (Ref. 2), and 10 CFR Part 100, “Reactor Site Criteria (Ref. 3). Applicable Regulations • 10 CFR 50.54(ff), “Conditions of Licenses,” requires plant shutdown if the Operating Basis Earthquake has been exceeded or if significant plant damage occurs for licensees of nuclear power plants that have implemented the earthquake engineering criteria in Appendix S of Part 50. Prior to resuming operations, the licensee is required to demonstrate to the Commission that no functional damage has occurred to those features necessary for continued operation without undue risk to the health and safety of the public, and that the licensing basis is maintained.. • 10 CFR Part 50, Appendix A, provides the “General Design Criteria for Nuclear Power Plants,” and establishes design, fabrication, construction, testing, and performance requirements for structures, systems, and components (SSCs) important to safety through general design criteria (GDC). The GDC applicable to this RG include GDC 2, “Design Bases for Protection against DG-1337, Page 2 Natural Phenomena,” which requires, in part, that SSCs important to safety shall be designed to withstand the effects of natural phenomena such as earthquakes, without loss of capability to perform their safety functions. • 10 CFR 50, Appendix S, “Earthquake Engineering Criteria for Nuclear Power Plants,” for plants licensed on or after January 10, 1997, requires, in part, plant shutdown if the Operating Basis