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:
sponse spectrum modal analysis method may be used for SSE analysis. The stability of elements in compression, such as the core barrel and the control rod guide tubes under outlet pipe rupture loadings should be inves- tigated. Either response spectra or time histories may be used for specifying seis- mic input motions of the SSE at the reactor core supports. The criteria for acceptance of the analytical results are as provided in SRP Sections 3.9.3 and 3.9.5. 6. Relevant requirements of GDC 1 are met as given below. Regarding the corre- lation to be made of tests and analyses of reactor internals, a discus- sion covering the following items to assure the adequacy and sufficiency of the test and analysis results should be provided: a. Comparison of the measured response frequencies with'the analytically obtained natural frequencies of the reactor internals for possible verification of the mathematical model used in the analysis. b. Comparison of the analytically obtained mode shapes with the shape of measured motion for possible identification of the modal combina- tion or verification of a specific mode. c. Comparison of the response amplitude time variation and the fre- quency content obtained from test and analysis for possible verification of the postulated forcing function. d. Comparison of the maximum responses obtained from test and analysis for possible verification of stress levels. e. Comparison of the mathematical model used for dynamic system analy- sis under operational flow transients and under the combined LOCA and SSE loadings, to note similarities. III. REVIEW PROCEDURES The reviewer will select and emphasize material from the procedures described below, as may be appropriate for a particular case. General Design Criteria 1, 2, 4, 14, and 15 state that all structures, system and components important to safety should be designed and tested to assure that safety functions can be performed in the event of operational transients, earthquakes, and LOCA