Document: NUREG-0800
Document ID: 1c54f5f9-dd57-4543-a00d-1597061af2e0
Document Type: srp
Title: SEISMIC CLASSIFICATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1608/ML16084A812.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.1
CFR Part: 
CFR Title: 

Content:
luding seismic design consideration and seismic classification for certain SSCs. These provisions support an overall system design that meets the requirements of GDC 2 as it relates to designing these SSCs to withstand earthquakes. 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: 3.2.1-7 Revision 3 – July 2016 1. Compliance with GDC 1 and 10 CFR Part 50, Appendix B, requires that SSCs important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety functions to be performed. GDC 1 requires, in part, that a QA Program be established and implemented to provide adequate assurance that SSCs important to safety will satisfactorily perform their safety functions. Regulations in 10 CFR Part 50, Appendix B, establish QA program requirements for the design, construction, and operation of SSCs important to safety. The requirements of 10 CFR Part 50, Appendix B apply to activities affecting the safety- related functions of those SSCs, including those SSCs defined by the guidance of RG 1.29 as seismic Category I SSCs. Specifying and using appropriate quality standards and requirements in accordance with 10 CFR Part 50, Appendix B, for the design of SSCs important to safety minimizes the potential for failures of those SSCs, including seismic Category I SSCs that prevent or mitigate the consequences of postulated accidents that could cause undue risk to the health and safety of the public. 2. Compliance with GDC 2 requires that nuclear power plant SSCs important to safety be designed to withstand the effects of natural phenomena, including earthquakes, without loss of capability to perform their safety functions. Also, compliance with 10 CFR Part 100, Appendix A and 10 CFR Part 50, Appendix S, requires that certain SSCs be designed to withstand the SSE and remain functional.