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:
ometry and curvature changes, etc., should be adequately considered. Use of the procedures described in the references is acceptable. (iii) When applicable, the effects of local soil settlements, soil arching, etc., also should be considered in the analysis. K. Interaction of Other Piping with Category I Piping. To be acceptable, each non-Category I piping system should be designed to be isolated from any Category I piping system by either a constraint or barrier or should be located remotely from the seismic Category I piping system. If isolation of the Category I piping system is not feasible or practical, adjacent non-Category I piping should be analyzed according to the same seismic criteria applicable to the Category I piping system. For non-Category I piping systems attached to Category I piping systems, the dynamic effects of the non-Category I piping should be simulated in the modeling of the Category I piping. The attached non-Category I piping, up to the first anchor beyond the interface, also should be designed not to cause a failure of the Category I piping during an earthquake of SSE intensity. L. Criteria Used for Damping. RG 1.61,"Damping Values for Seismic Design of Nuclear Power Plants," provides acceptable values which may be used. The methods for analysis of damping should be consistent with those described in SRP Section 3.7.2. 3.9.2-15 Revision 3 - March 2007 3. To meet the requirements of GDCs 1 and 4, the following guidelines, in addition to RG 1.20 “Comprehensive Vibration Assessment Program for Reactor Internals During Preoperational and Initial Startup Testing”, apply to the analytical solutions to predict vibrations of reactor internals for prototype plants. Generally, this analysis is required only for prototype designs and power uprate of existing plants; However, it is not required for non-prototypes except that segments of an analysis (in particular, assessments of any potential adverse flow effects) may be necessary if there are