Document: NUREG-0800
Document ID: 7c104096-d040-463a-a94b-a0af08ab3478
Document Type: srp
Title: DYNAMIC TESTING AND ANALYSIS OF SYSTEMS, STRUCTURES, AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0702/ML070230008.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.2
CFR Part: 
CFR Title: 

Content:
the test data for meaningful interpretation of the vibration behavior of various components should be provided. Vibration interpretation should include the amplitude, frequency content, stress state, and possible effects on safety functions. There should be detailed analysis of bias errors and uncertainties of instrumentation, data acquisition systems, and models to estimate loading functions from the measured data. G. Vibration predictions, test acceptance criteria and bases, and permissible deviations from the criteria should be provided before the test. H. The applicant/licensee is expected to provide a summary evaluation of plant startup and power ascension to the staff within 90 days of plant startup. If full licensed power is not achieved in that time period, the applicant/licensee is expected to provide a supplemental report within 30 days after achieving full licensed power. I. There should be walkdown inspections during and visual and nondestructive surface inspections after completion of the vibration tests. The inspection program description should include the areas subject to inspection, the methods of inspection, the design access provisions to the reactor internals, and the equipment to be used for such inspections, which preferably should follow the removal of the internals from the reactor vessel. Where removal is not feasible, the inspections should be by means of equipment appropriate for in-situ inspection. The areas inspected should include all load-bearing interfaces, core restraint devices, high-stress locations, and locations critical to safety functions. MSL valves also should be inspected if adverse flow effects (flow-induced acoustic and structural resonances) are observed during the startup test. For later reactor internals with the same design, size, configuration, and operating conditions as the prototype, the vibration test program should comply with the requirements of the appropriate non-prototype program as specified in RG 1.20. 5.