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:
mic loads from normal, anticipated operational occurrence, and accident conditions. Before SSE qualification, the applicant should demonstrate that the equipment can withstand the equivalent effect of five OBE excitations without loss of structural integrity. Analyses alone, without testing, are acceptable as a basis for qualification only if the necessary function of the equipment is ensured by its structural integrity alone. When complete testing is impractical due to factors such as limitations in vibration test equipment to accommodate large equipment, a combination of tests and analyses is acceptable. Equipment that has been previously qualified by means of tests and analyses equivalent to those described herein is acceptable provided that the applicant submits proper documentation of such tests and analyses. ii. Equipment should be tested in the operational condition. Functionality should be verified during and/or after the testing, as applicable to the 1 The NRC staff is completing a revision to Regulatory Guide 1.100 to accept the 2013 edition of IEEE Std. 344 and the 2012 edition of QME-1 for use by applicants and licensees, and this Revision 4 of the guide should be used when final. Conforming updates to this SRP section will be made in a future revision. 3.10-7 Revision 4 – December 2016 equipment being tested. Loadings simulating those of plant normal operation, such as thermal and flow-induced loading, if any, should be concurrently superimposed upon the seismic and other pertinent dynamic loading to the extent practicable. iii. Response spectrum or time history methods should specify the characteristics of the required seismic and dynamic input motions. These characteristics, derived from the seismic and dynamic analyses of the structures or systems, should be representative of the input motions at the equipment mounting locations, except as noted in paragraph 3 below, which addresses the case where the applicant proposes qualification by an