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:
and unimpaired operation of the control rod assemblies for safe reactor operation and shutdown. 4. The applicant has met the relevant requirements of GDCs 2 and 4 for design of systems and components important to safety to withstand the effects of earthquakes and appropriate combinations of the effects of normal and postulated accident conditions with the effects of the SSE by a dynamic system analysis which provides an acceptable basis for the structural design adequacy of the reactor internals and unbroken piping loops to withstand the combined dynamic loads of postulated LOCA and SSE and (for a BWR) the combined loads of a postulated main steam line rupture and SSE. The analysis provides adequate assurance that the combined stresses and strains in the components of the reactor coolant system and reactor internals will not exceed the allowable design stress and strain limits for the materials of construction and that the consequent deflections or displacements at any structural elements of the reactor internals will not distort the reactor internals geometry to the extent that core cooling may be impaired. The methods for component analysis have been found compatible with those for the systems analysis. The proposed combinations of component and system analyses are, therefore, acceptable. The assurance of structural integrity of the reactor internals under LOCA conditions for the most adverse postulated loading event adds confidence that the design will withstand a spectrum of lesser pipe breaks and seismic loading events. 5. The applicant has met the relevant requirements of GDC 1 for systems and components designed and tested to quality standards commensurate with the importance of the safety functions performed by the proposed program to correlate the test measurements with the analysis results. The program provides an acceptable basis for demonstrating the compatibility of the results from tests and analyses, the consistency between mathematical models used