Document: NUREG-0800
Document ID: 5dc31795-dfdc-4ed0-a4c2-e6a13e4997ab
Document Type: srp
Title: SEISMIC AND DYNAMIC QUALIFICATION OF MECHANICAL AND ELECTRICAL
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1608/ML16088A101.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.10
CFR Part: 
CFR Title: 

Content:
nsuring that SSCs important to safety will perform acceptably when subjected to SSE loads and the equivalent effect of five OBE loads. III. REVIEW PROCEDURES The reviewer will select material from the procedures described below, as may be appropriate for a particular case. These review procedures are based on the identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection I. 1. At the construction permit (CP) stage, the staff reviews the program described by the applicant in the PSAR for the qualification of mechanical, electrical, and instrumentation 3.10-17 Revision 4 – December 2016 equipment and measures the program against the requirements listed in Subsection I of this SRP section. Of particular interest is the proper use of test and analytical, or the combination of both, procedures. Equipment that is too complex for reliable mathematical modeling should be tested unless the analytical procedures and corresponding design are conservative. The staff reviews both the test and the analysis methods to ensure that all important modes of response will be excited in tests or considered in analysis. The staff verifies that input motions, in terms of response spectra or time history in all necessary directions, envelop the required input. The staff also reviews the adequacy of equipment supports. If qualification by an experience- based approach is proposed, the staff reviews the details of the experience database, including applicable implementation procedures, to ensure structural integrity and functionality of the in-scope mechanical and electrical equipment. Supporting documentation for equipment identified in the experience database should confirm that such equipment remained functional during and after an SSE and the equivalent effect of five postulated