Document: NUREG-0800
Document ID: 817bb0ad-6fd7-433e-aa2b-b4b3e1166f9c
Document Type: srp
Title: PROBABILISTIC RISK ASSESSMENT AND SEVERE ACCIDENT EVALUATION FOR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0717/ML071700652.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
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Content:
SRP section. For additional information, the staff should consider the information provided in Chapter 19 of past SERs for advanced LWRs. The NRC issued the final SER (FSER) for the DC of the advanced boiling-water reactor design as NUREG-1503, the FSER for the DC of the System 80+ reactor design as NUREG-1462, the FSER for the DC of the AP600 design as NUREG-1512, and the FSER for the DC of the AP1000 as NUREG-1793. The staff reviews the applicant’s use of the results and insights of its PRA and severe accident evaluations to establish specifications and performance objectives for plant design, construction, inspection, and operation. The NRC should review this information to ensure that it is able to conclude that the applicant has performed sufficiently complete and scrutable analyses, the results and insights support the application, and the applicant has in place programs and processes that will enable it to maintain an up-to-date PRA for these uses and applications. As expressed in the review interfaces portion of Subsection I of this SRP section, other technical branches are expected to use the applicant’s PRA results and insights to inform their review based on risk significance. This can help define the depth of their technical review, highlight assumptions regarding SSC and operator performance and reliability, ITAAC, interface requirements, plant features, design and operational programs, and other aspects. Working with the licensing project organization, the PRA staff will provide the applicant’s PRA results and insights, specifically the relative risk ranking of SSCs and operator actions as well as identifying assumptions and limitations in the analyses that may impact these results and insights to the other technical branches. As the staff reviews the applicant’s PRA information, if the applicant’s PRA results and insights change significantly, the staff through the licensing project organization should convey these changes to the other