Document: NUREG-0800
Document ID: 7d53889c-d236-4e84-9579-a2beb4716167
Document Type: srp
Title: SEISMIC CLASSIFICATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070296.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.1
CFR Part: 
CFR Title: 

Content:
ev. 2 - April 1996 3.2.1-2 management SSCs that require seismic design considerations as specified in Regulatory Guide 1.143.9 This review which is coordinated with each branch that has primary review responsibility for these plant features is performed for both construction permit (CP) and operating license (OL) applications. The EMEB review of seismic Category I items includes the following plant 10 features: structures, dams, ponds, cooling towers, reactor internals, fluid systems important to safety that are identified in Regulatory Guide 1.26, safety-related instrument sensing lines that are identified in Regulatory Guide 1.151, ventilation systems, standby diesel generator 11 auxiliary systems, fuel handling systems, and cranes. The applicant's proposed seismic classification may in part be presented in the form of a table which identifies those SSCsstructures, systems and components that are designated (1)12 13 seismic Category I. The table should identify all activities affecting the safety-related functions of these seismic Category I plant features which should also meet General Design Criterion 1 and the pertinent quality assurance requirements of 10 CFR Part 50, Appendix B. Details of 14 the seismic classification of these plant features may be shown on plot plans, general arrangement drawings, and piping and instrumentation diagrams. Where portions of structures and fluid systems are seismic Category I they also must be clearly identified. For fluid systems important to safety, the classification tables in the SAR should identify system components such as pressure vessels, heat exchangers, storage tanks, pumps, piping, and valves, have suitable footnotes defining interfaces, and be in sufficient detail so that there is a clear understanding of the extent of those portions of the system that are classified as seismic Category I. Review Interfaces:15 The EMEB also performs the following reviews for the SRP sections indicated: 16 1. Determines the