Document: NUREG-0800
Document ID: f07feb9e-0113-4ab4-b79b-ecfb1f8b791a
Document Type: srp
Title: RELIABILITY ASSURANCE PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1329/ML13296A435.pdf
Revision Date: 2023-06
Chapter: 17
Section ID: 17.4
CFR Part: 
CFR Title: 

Content:
each as-built RAP SSC and the reliability assumed in the PRA may be highly uncertain. For another, the basis for the estimated reliability of each as-built RAP SSC may be the same as, or very similar to, the basis for the reliability assumed in the PRA. Therefore, only calculating and comparing numerical values may not be useful. Finally, additional aspects of D-RAP should be considered in order to address other risk insights and key assumptions, which are not reliability values, from probabilistic, deterministic, and other methods of analysis used to identify and quantify risk (e.g., a PRA key assumption that room temperature will not exceed the limit of the safety injection pumps during the mission time regardless of room cooling availability). Implementation of D-RAP should be a process that ensures the plant is designed and constructed in a manner that is consistent with the risk insights and key assumptions from the analyses used to identify and quantify risk. The RAP provides controls to maintain the reliability and availability of RAP SSCs. 2 The text “programmatic controls” is synonymous with and replaces the term “essential elements” as described in SECY-95-132. 17.4-3 Revision 1 –May 2014 provide control over activities affecting the quality of the RAP SSCs. The QA controls for safety-related SSCs are established through Title 10 of the Code of Federal Regulations (10 CFR) Part 50, “Domestic Licensing of Production and Utilization Facilities.” The QA requirements are specified in Appendix B, “Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants.” SRP Section 17.5, Part V, "Nonsafety-Related SSC Quality Controls," addresses QA controls for RAP SSCs that are not safety-related. D-RAP should be implemented through the following phases: • During the DC phase, the DC applicant is responsible for developing and implementing those portions of the D-RAP that apply to the DC. This effort consists of: (1) developing