Document: NRC Regulatory Guide
Document ID: cdc706d5-60ed-40a4-b55a-9771904107a7
Document Type: regulatory_guide
Title: Seismic Qualification of Electric and Mechanical Equipment for Nuclear Power Plants (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1809/ML18093A675.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.100
CFR Part: 
CFR Title: 

Content:
tter for ensuring the reliability of digital control/protective systems). 2. Functional Qualification of Active Mechanical Equipment 2.1 Regulatory Positions on ASME QME-1-2017 2.1.1 General NRC Staff Positions In general, the NRC staff finds ASME QME-1-2017 acceptable for the functional qualification of (1) active mechanical equipment in new NPPs and (2) new or replacement active mechanical equipment in operating NPPs, subject to the following provisions: a. Appendices The staff notes that several appendices of ASME QME-1-2017 are designated as either nonmandatory or mandatory (e.g., Mandatory Appendix QR-I; Nonmandatory Appendices QR-A, QR-B, and QR-C; Mandatory Appendix QDR-I; Nonmandatory Appendices QDR-A and QDR-B; Mandatory Appendix QP-I; Nonmandatory Appendices QP-D and QP-E; Mandatory Appendix QV-I; and Nonmandatory QV-B). The staff’s position is that, if a licensee or applicant commits to the use of nonmandatory appendices in ASME QME-1-2017 for its qualification of active mechanical equipment in NPPs, the criteria and procedures delineated in those nonmandatory appendices become part of the requirements for its qualification program unless it requests and justifies specific deviations. DG-1328, Page 18 b. Nonmandatory Appendix QR-B This appendix recommends a methodology and describes the documentation that should be available in a user’s files to demonstrate the qualification of nonmetallic parts, materials, or lubricants. It addresses the steps for the user of the active mechanical equipment to follow to qualify and maintain the qualification of the nonmetallic material that is part of the active mechanical equipment. The NRC staff considers Nonmandatory Appendix QR-B to provide a reasonable approach to the qualification of nonmetallic material in active mechanical equipment. c. Sections QDR and QP Sections QDR and QP provide a reasonable approach to the qualification of dynamic restraints and active pump assemblies, respectively. These sections