Document: NUREG-0800
Document ID: 73bfb001-838f-4b48-a387-d3ef2ee987b5
Document Type: srp
Title: SEISMIC CLASSIFICATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340616.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.1
CFR Part: 
CFR Title: 

Content:
smic Category I that are not identified as within the scope of the Appendix B Quality Assurance Program this information is transmitted to the Quality Assurance Branch for resolution of the issue. The seismic classification review of structures, systems, and components important to safety and the review verifying that these plant features are constructed in accordance with a 10 CFR Part 50, Appendix B Quality Assurance Program is normally performed concurrently with, the quality group classification review of SRP Section 3.2.2. 3.2.1-3 Rev. 1 - July 1981 In the event an applicant intends to take exception to Regulatory Guide 1.29 and has not provided an adequate justification for his proposed seismic classification, questions are prepared by the staff which may require additional documentation or analysis to establish an acceptable basis for his proposed seismic classification. Staff comments may also be prepared requesting clarification in order to assure a clear understanding of the seismic classification assigned to a system by the applicant. If the staff's questions are not resolved in a satisfactory manner, a staff position is taken requiring conformance to Regulatory Guide 1.29. IV. EVALUATION FINDINGS The staff's review should verify that adequate and sufficient information is contained in the SAR and amendments to arrive at conclusions of the following type, which are to be included in the staff's safety evaluation report: Structures, systems and components (excluding electrical features) that are important to safety and that are required to withstand the effects of a safe shutdown earthquake and remain functional have been classified as seismic Category I items and have been identified in an acceptable manner in Tables 3.X.X and 3.X.X, and on system piping and instrumentation diagrams in the SAR. Other structures, systems and components that may be required for operation of the facility (excluding electrical features) need not be designed to seismic