Document: NUREG-0800
Document ID: 6b7eddf4-f7ce-4821-9f11-e37070221e57
Document Type: srp
Title: DYNAMIC TESTING AND ANALYSIS OF SYSTEMS, STRUCTURES, AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1613/ML16133A418.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.2
CFR Part: 
CFR Title: 

Content:
Any adjustments to the calculated response during the inspections, tests, analyses, and acceptance criteria (ITAAC) process to address differences between as-designed and as-built conditions are also reviewed. Further, the rationale for the selection of the testing locations and measurement types (strain, vibration, pressure) is reviewed. 4. The NRC staff will review the plans for vibration monitoring of reactor internals conducted during the preoperational and startup test program. General guidance for preoperational and initial startup testing for prototypes, limited prototypes, and non- prototypes is identical to that for the analyses described in Section I.3. Components that should be considered for instrumentation in preoperational and initial startup testing are listed in Section I.3. However, new reactor internals designs may include additional components not listed in Section I.3 which also need to be evaluated. For components with no prior history of adverse effects due to FIV, AR, AIV, or MIV; and which have been shown by analysis to have a high margin of safety against such effects (for example, a margin of safety of 2.0 has been acceptable in past reviews), no on-structure instrumentation or measurements are necessary. Measurements need to be performed, however, on systems and components that have been adversely affected by FIV, AR, AIV and MIV in the past (such as BWR steam dryers). Instrumentation should also be considered for new components that have no operating experience. Less instrumentation and measurements are needed for limited prototypes. Additional guidance for limited prototypes is found in RG 1.20, Revision 4, Section C.3.2, and for nonprototypes in Section C.4.2. The purpose of vibration monitoring is to confirm and complement the analyses to demonstrate that adverse flow, mechanical, and acoustic excitation mechanisms expected during all steady state and anticipated transient conditions that correspond to preoperational, startup test,