Document: NUREG-0800
Document ID: e32f0820-4e33-476e-aa36-4ca8c2c64af0
Document Type: srp
Title: Use of Probabilistic Risk Assessment in Plant-Specific, Risk-Informed Decisionmaking:
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0119/ML011940192.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
CFR Part: 
CFR Title: 

Content:
he peer review (including the review guidelines or standards 1:o which the PRA is compared, the review scope and elements, the qualification and makeup of the review team, etc.). Results from previous staff reviews of the PRA (e.g., from previous applications) could also provide a good starting point. In cases where the PRA is based on the individual plant examination (IPE) or the IPE of externally initiated events (IPEEE) models, reviewers should also be familiar with the request for additional information (RAI) issued by the staff in connection with those examinations, as well as the licensee's responses to those RAIs, and the staff evaluation reports regarding the licensee's IPE and IPE-EE submittals. Reviewers could reach a finding that previous industry or staff reviews are sufficient to show that the PRA is oif adequate quality in one or more of the review areas for the present application. In such cases, the scope of the review should be adjusted accordingly. However, reviewers should be aware of potential application-specific differences, and of the currency of the previous review findings with respect to the current plant design and operating procedures. It should be noted that the NRC has not developed its own formal standards nor has it yet endorsed an industry standard for PRAs submitted in support of applications for changes to a plant's LB that are covered by this Standard Review Plan chapter. However, the NRC continues to support ongoing initiatives to develop such standards and expects that ultimately PRA standards will be developed and endorsed by the NRC that are suitable for regulatory decisionmaking as described in this Standard Review Plan chapter. Currently under development are standards for internal events, external events (e.g., seismic, high winds and external flooding), and low power and shutdown modes of operation.3 Quality Assurance Requirements Related to the PRA To the extent that a licensee elects to use PRA as an element to enhance