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:
ation and stress response are reviewed. 3.9.2-6 Revision 3 - March 2007 D. Verification of predictions by comparison to test results. The comparisons of predictions and test results are reviewed along with any use of the comparisons to substantiate uncertainties and bias errors in individual analysis components or the end-to-end analysis procedure. 4. Flow-induced vibration and acoustic resonance testing of reactor internals should be conducted during the preoperational and startup test program. Generally, this analysis is also required from licensees requesting a power uprate for an existing plant or steam generator replacement in a PWR. However, it is not required for non-prototypes except testing of some reactor internals may be necessary if there are substantial deviations from the prototype internals design or operating conditions. If the reactor internal structures are a non-prototype design, the applicant should refer to the results of tests and analyses for the prototype reactor and give a brief summary of the results. Plant components, such as the steam dryer in a BWR nuclear power plant, perform no safety functions but must retain their structural integrity to avoid the generation of loose parts that might adversely impact the capability of other plant equipment to perform their safety functions. Therefore, for example, the following structures in BWRs also should be included in these tests: • Chimney head* and steam separator assembly* • Steam dryers assembly* • Feedwater spargers* • Standby liquid control header, spargers, and piping • RPV vent assembly • Sampling probes in feedwater, steam, and condensate systems (* denotes non-safety related components.) Similarly, for PWR nuclear power plants, the internal components of steam generators also must be tested against adverse flow effects (flow-induced vibration and acoustic resonance). The tests should consider such various flow excitation mechanisms as vortex-induced vibration, flow-excited