Document: NUREG-0800
Document ID: 1f106a50-722f-45fa-952a-2e7ab7d836c1
Document Type: srp
Title: DYNAMIC TESTING AND ANALYSIS OF SYSTEMS, COMPONENTS, AND EQUIPMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052360453.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.2
CFR Part: 
CFR Title: 

Content:
s for conduit and cable trays, and ventilation ducts), the applicable methods of seismic analysis (response spectra, time history, equivalent static load) are reviewed to ascertain that the techniques employed are in accordance with the acceptance criteria as given in subsection II.2.a of this SRP section. b. Determination of Number of Earthquake Cycles Criteria or procedures used to establish the number of earthquake cycles are reviewed to determine that they are in accordance with the acceptance criteria as given in subsection II.2.b of this SRP section. Justification for deviating from the acceptance criteria is requested from the applicant, as necessary. c. Basis for Selection of Frequencies As applicable, criteria or procedures used to separate fundamental frequencies of components and equipment from the forcing frequencies of the support structure are reviewed to determine compliance with the acceptance criteria of subsection II.2.c of this SRP section. d. Three Components of Earthquake Motion The procedures by which the three components of earthquake motion are considered in determining the seismic response of systems are 3.9.2-16 Rev. 2 - July 1981 reviewed to determine compliance with the acceptance criteria of subsection II.2.d of this SRP section. e. Combination of Modal Responses The procedures for combining modal responses are reviewed to deter- mine compliance with the acceptance criteria of subsection II.2.e of this SRP section, when a response spectrum modal analysis method is used. f. Analytical Procedures for Piping Systems For all Category I piping and applicable non-Category I piping, the methods of seismic analysis (response spectra, time history, equiva- lent static load) are reviewed to determine that the techniques employed are in accordance with the acceptance criteria of subsec- tion II.2.f of this SRP section. Typical mathematical models are reviewed to judge whether all significant degrees of freedom have been included. g.