Document: NUREG-0800
Document ID: e8ae4ac1-29ed-46b1-b4c2-19c7f632e815
Document Type: srp
Title: DYNAMIC TESTING AND ANALYSIS OF SYSTEMS, COMPONENTS, AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070336.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.2
CFR Part: 
CFR Title: 

Content:
des, a list of selected locations for visual inspections and other measurements, the acceptance criteria, and possible corrective actions if excessive vibration or indications of normal thermal motion restraint occurs.8 2. The following areas related to the seismic system analysis described in the applicant's safety analysis report (SAR) are reviewed. a. Seismic Analysis Method For all Category I systems, components, equipment and their supports (including supports for conduit and cable trays, and ventilation ducts), and for certain non- Category I items that are to be designed to seismic criteria, the applicable seismic 9 analysis methods (response spectra, time history, equivalent static load) are reviewed. The manner in which the dynamic system analysis method is performed is reviewed. The method chosen for selection of significant modes and an adequate number of masses or degrees orf freedom is reviewed. The 10 manner in which consideration is given in the seismic dynamic analysis to maximum relative displacements between supports is reviewed. In addition, other significant effects that are accounted for in the dynamic seismic analysis such as hydrodynamic effects and nonlinear response are reviewed. b. Determination of Number of Earthquake Cycles Criteria or procedures used to establish theThe number of earthquake cycles during one seismic event, and the maximum number of cycles for which applicable Category I systems and components are designed, and the criteria and procedures used by the applicant to establish these parameters are reviewed by the staff for consistency with the methods described are specified by Structural Engineering Branch (SEB) in Standard Review Plan (SRP) Section 3.7.3, subsection I.2.11 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. 3.9.2-3 DRAFT Rev. 3 - April 1996 d. Three