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:
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) Section QR-A8330, “Earthquake Experience-Based Qualification Documentation,” as item (f). d. The NRC staff will review the use of earthquake experience data for the seismic qualification of active mechanical equipment, as described in ASME QME-1-2017, Section QR-A7400. Licensees or applicants may submit the information, perhaps as a TR, to the NRC for approval. The staff's review will include areas such as (1) the credibility and completeness of the compilation of the experience database, (2) the inclusion and exclusion rules for active mechanical equipment in the experience database, (3) the justification used to demonstrate the similarity among the member items in a reference equipment class, (4) the justification used to demonstrate the similarity between active mechanical equipment in the experience database and equipment in the NPP for seismic qualification purposes, and (5) the justification used to demonstrate the functionality of candidate equipment and the member items in a reference equipment class during and after an earthquake. e. If the licensee or applicant proposes to use test experience data for seismic qualification, it should submit the details of the test experience database, including applicable implementation procedures, to ensure the structural integrity and functionality of the in-scope mechanical equipment. Supporting documentation for equipment identified in the database should confirm that such equipment will remain functional during and after the equivalent effect of five postulated occurrences of an OBE and one SSE (or the alternative described in Regulatory Position C.1.2.1.i), in combination with other relevant static and dynamic loads, consistent with the design basis. f. The NRC staff does not find it acceptable to restrict the