Document: NUREG-0800
Document ID: 22884f18-189e-46a8-81b2-45db11edf145
Document Type: srp
Title: SYSTEM QUALITY GROUP CLASSIFICATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1422/ML14227A641.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.2
CFR Part: 
CFR Title: 

Content:
ooms3 Clarification of the quality group classification provided in RG 1.26 and applicable to those portions of BWR main steam and feedwater systems (other than the reactor coolant pressure boundary) on the turbine side of the containment isolation valves, is provided in Branch Technical Position (BTP) 3-1 and 3-2. Additional guidance on the quality group classification of systems and components for typical plant designs is provided in Appendix A attached to this SRP section. Appendix A identifies quality group classifications and related references supplemental to the guidance of RG 1.26 for the classification of system components. Table 3.2.2-1 provides a summary of the construction codes and standards for components of water-cooled nuclear power plants and is based on the NRC quality group classification system in RG 1.26. Appendix A identifies additional guidance regarding the construction of certain systems and components. In the event an applicant intends to not follow RG 1.26, the applicant should provide adequate justification for the proposed quality group classification or an analysis to establish an acceptable basis for the proposed quality group classification, and the staff should document its evaluation of this justification in the safety evaluation report. The staff may also request additional information from the applicant to ensure a clear understanding of the quality group classifications 6 Refers to the relief valves providing RCPB overpressure protection. 3.2.2-11 Draft Revision 3 – August 2015 assigned to a system by the applicant. Exceptions and alternatives to the specified quality group classifications of RG 1.26 or the guidance identified in Appendix A are acceptable only if application of an “equivalent quality level” is justified. In such cases, justification can be demonstrated if: the component is classified to meet the criteria of a higher group classification than specified in RG 1.26 or alternative design rules are based on the