Document: NRC Regulatory Guide
Document ID: b6726dc6-2968-4ca9-a925-c831eaaecc69
Document Type: regulatory_guide
Title: 03/2007
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0702/ML070260029.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.61
CFR Part: 
CFR Title: 

Content:
ory guides that are currently being developed. The NRC staff will revise existing guides, as appropriate, to accommodate comments and to reflect new information or experience. W ritten comments may be submitted to the Rules and Directives Branch, Office of Adm inistration, U.S. Nuclear Regulatory Commission, W ashington, DC 20555-0001. Regulatory guides are issued in 10 broad divisions: 1, Power Reactors; 2, Research and Test Reactors; 3, Fuels and Materials Facilities; 4, Environmental and Siting; 5, Materials and Plant Protection; 6, Products; 7, Transportation; 8, Occupational Health; 9, Antitrust and Financial Review; and 10, General. Requests for single copies of draft or active regulatory guides (which may be reproduced) should be made to the U.S. Nuclear Regulatory Commission, W ashington, DC 20555, Attention: Reproduction and Distribution Services Section, or by fax to (301) 415-2289; or by email to Distribution@ nrc.gov. Electronic copies of this guide and other recently issued guides are available through the NRC’s public W eb site under the Regulatory Guides document collection of the NRC’s Electronic Reading Room at http://www.nrc.gov/reading-rm/doc-collections/ and through the NRC’s Agencywide Documents Access and Management System (ADAMS) at http://www.nrc.gov/reading-rm/adams.html, under Accession No. ML070260029. U.S. NUCLEAR REGULATORY COMMISSION March 2007 Revision 1 REGULATORY GUIDE OFFICE OF NUCLEAR REGULATORY RESEARCH REGULATORY GUIDE 1.61 (Draft was issued as DG-1157, dated October 2006) DAMPING VALUES FOR SEISMIC DESIGN OF NUCLEAR POWER PLANTS A. INTRODUCTION This regulatory guide is being revised to update the guidance for applicants and licensees regarding the acceptable damping values that the U.S. Nuclear Regulatory Commission (NRC) staff used in the seismic response analysis of Seismic Category I nuclear power plant structures, systems, 1 and components (SSCs) in accordance with Title 10, Part 50, of the Code of Federal Regulations