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:
nalysis to compute as vertical response loads for designing Category I of affected systems, components, equipment and their supports in lieu of the use of a vertical seismic system dynamic analysis is reviewed.12 i. Torsional Effects of Eccentric Masses The criteria and procedures that are used to consider the torsional effects of eccentric masses (e.g., valve operators) in seismic system analyses are reviewed. DRAFT Rev. 3 - April 1996 3.9.2-4 j. Category I Buried Piping Systems For Category I buried piping, the seismic criteria and methods which consider the effect of fill settlement, including pipe profile and pipe stresses, the movements at support points, penetrations, and anchors, are reviewed. k. Interaction of Other Piping With Category I Piping The seismic analysis procedures to account for the seismic motion of non-Category I piping systems in the seismic design of Category I piping are reviewed. l. Criteria Used for Damping The criteria to account for damping in systems, components, equipment and their supports is reviewed. 3. Dynamic responses of structural components within the reactor vessel caused by steady-state and operational flow transient conditions should be analyzed for prototype (first of a design) reactors. Generally, this analysis is not required for non-prototypes13 except that segments of an analysis may be necessary if there are substantial deviations from the prototype internals design. The purpose of this analysis is to predict the vibration behavior of the components, so that the input forcing functions and the level of response can be estimated. Before conducting the analyses, the specific locations for calculated responses, the considerations in defining the mathematical models, the interpretation of analytical results, the acceptance criteria, and the methods of verifying predictions by means of tests should be determined. If the reactor internal structures are a non-prototype design, reference should be made to the results of tests