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:
alysis for verification of alternating stress levels. E. Comparison of the mathematical model for dynamic system analysis under operational flow transients and under combined LOCA and SSE loadings for similarities. F. Comparison of measurements and predictions of any adverse flow phenomena (e.g., flow excited acoustic and/or structural resonances), in order to validate the 3.9.2-30 Revision 4 – March 2017 models and methodologies used in the predictive analysis of vibration induced by the adverse flow phenomena. If test data indicate the presence of significant fluid-structure interaction (FSI) behavior, where structural vibration feeds back into the flow-induced loading and causes response much higher than originally predicted, the staff will assess the applicant’s/licensee’s methodology for quantifying the FSI on a case by case basis. An acceptable FSI methodology needs to ensure that conservative, bounding vibration and alternating stress are determined. Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. GDC 1 requires that systems and components important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety functions performed. Vibration, thermal expansion, and dynamic effects tests are described in this SRP section for startup functional testing of specified high-energy and moderate-energy piping and their supports and restraints. Guidance is provided herein and in RG 1.20 for analysis of vibration of reactor internals. These vibration analyses are confirmed by prototype testing. Dynamic analyses methods are described in this SRP section for all seismic Category 1 systems, components, equipment, and their supports (including supports for conduit and cable trays, and ventilation ducts). Compliance with the requirements of GDC 1 provides assurance that