Document: NUREG-0800
Document ID: aa1c1ded-ea20-4e56-972b-84806f488df7
Document Type: srp
Title: RELIABILITY ASSURANCE PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1235/ML12354A592.pdf
Revision Date: 2023-06
Chapter: 17
Section ID: 17.4
CFR Part: 
CFR Title: 

Content:
f analysis used to identify and quantify risk and include, but is not limited to, the use of information obtained from the following sources: • quantitative risk evaluations based on fault trees and event trees • other forms of risk evaluation, which may be quantitative or qualitative (e.g., fire-induced vulnerability evaluation or seismic margins analysis) • severe accident evaluations • industry wide operating experience • expert panel(s) 17.4-9 Draft Revision 1 – May 2013 For example, the applicant identifying the RAP SSCs based on: risk insights and key assumptions from severe accident evaluations; risk insights, importance measures and key assumptions from full power and low-power/shutdown risk evaluations for internal events, fire, seismic, flooding and other external events; consideration of SSCs implicitly assumed in important operator actions or initiating events that are significant contributors to risk; consideration of industry operating experience; and use of expert panels in reviewing the information associated with risk significance determinations. Risk evaluations should cover the full spectrum of potential events and the range of plant operating modes considered in SRP Section 19.0. This ranges from full power to shutdown and all anticipated maintenance conditions. The applicant should consider beyond-design-basis accidents resulting in core damage and large releases of radioactivity into containment and the environment. The applicant should also evaluate for inclusion in the RAP those SSCs that are not modeled in the PRA (e.g., by using deterministic or other methods of analysis). For passive plant designs, the applicant should include within the scope of the RAP all SSCs subject to RTNSS. If the applicant excludes certain types of risk-significant SSCs from the RAP (e.g., passive SSCs such as pipes, ducts, electrical cables), then the application should provide a rationale for excluding these SSCs and address how other programs and