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:
A, acceptable for the seismic qualification of (1) active mechanical equipment in new NPPs and (2) new or replacement active mechanical equipment in operating NPPs. The NRC staff acknowledges that the section on test experience-based qualification (QR-A7500) in ASME QME-1-2017 is “to be added in a later edition.” Positions specific to test experience-based qualification are listed below. The NRC staff has the following positions on Nonmandatory Appendix QR-A to ASME QME-1-2017, including exceptions and clarifications: a. The staff notes that several appendices to 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 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 DG-1328, Page 14 become part of the basis for its qualification program unless it requests and justifies specific deviations. b. Seismic qualification by analysis, testing, or similarity, as described in Sections QR-A7100, QR-A7200, and QR-A7300 of ASME QME-1-2017, respectively, is an acceptable method for the seismic qualification of active mechanical equipment. c. ASME Class 1, 2, and 3 active mechanical equipment are subject to, and must meet, the requirements in the Section III, “Rules for Construction of Nuclear Power Plant Components,” of the ASME Boiler and Pressure Vessel Code (BPV Code) (Ref. 37). The NRC staff considers this position to apply to ASME QME-1-2017 in (1) Section QR-6000, “Qualification Specification,” as item (j), (2) Section QR-A7440, “Qualification of Candidate Equipment,” as item (g), and (3)