Document: NRC Regulatory Guide
Document ID: 303ef13e-f2e6-41b2-be1a-56f2ba131bb9
Document Type: regulatory_guide
Title: Restart of a Nuclear Power Plant Shut Down by a Seismic Event
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740093.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.167
CFR Part: 
CFR Title: 

Content:
tory guides ae not substitutes for regulations, and compliance with them Is not required. Methods end solutions different from those set Out in the guides will be acceptable 9 they provide a basis for te indings requisite to the Issuance or con. tinuance of a permit or license by the Commission. Tha guide was Issued after consideration of comments received from the public. Corn merts and suggestions for improvements In these guides we encouraged st all times, and guides win be revised, as apprpriate, to accommodate comments and to reflect new In fotnnion or eiperlence. Written comments may be submitted to the Rules Review and Directives Branch, DFIPS, ADM, U.S. Nuclear Regulatorq Commission, Washington, DC 20555-0001. 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 Data from seismic instrumentation 2 and a walkdown of the nuclear power plant1 are used to make the initial determination of whether the plant must be shut down after an earthquake, if the plant has not al ready shut down from operational perturbations result ing from the seismic event. The Electric Power Research Institute has devel oped guidelines that will enable licensees to quickly identify and assess earthquake effects on nuclear power plants in EPRI NP-6695, "Guidelines for Nuclear Plant Response to an Earthquake," December 1989.3 This regulatory guide addresses sections of EPRI NP-6695 that relate to postshutdown inspection and tests, inspection criteria, inspection personnel, docu mentation, and long-term evaluations. 2Regulatory Guide 1.12, Revision 2, "Nuclear Power Plant Instrumen tation for Earthquakes," describes seismic instrumentation acceptable to the NRC staff. 3EPRI reports may be obtained from the Electric Power Research Insti tute, EPRI Distribution Center, 207 Coggins Dr., RO. Box 23205, Pleasant Hill, CA 94523. The guLides wre Issued In the following ten