Document: NUREG-0800
Document ID: b8d2b8f5-432a-4c0a-81ab-20231f7d0f28
Document Type: srp
Title: PROBABILISTIC RISK ASSESSMENT AND SEVERE ACCIDENT EVALUATION FOR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1508/ML15089A068.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
CFR Part: 
CFR Title: 

Content:
gh Chapter 19 of the applicant’s FSAR should include the information needed by the staff to determine that the relevant acceptance criteria have been met, some staff audits of the PRA and supporting analyses may be necessary to fully understand, review, and confirm the PRA results, insights, and associated analytical bases. The staff may refer to the summary reports from these audits in the SER. However, for instances in which additional information is needed to complete the staff’s review of the FSAR, the staff will use the RAI process. Reviewers utilizing the RAI process should make it clear to the applicant that if an RAI results in substantive change to information in the FSAR or DCD, these documents must be revised to reflect the new information. For additional information, the staff should consider the information provided in Chapter 19 of past SERs for advanced LWRs. The NRC issued the Final Safety Evaluation Report (FSER) for the DC of the Advanced Boiling-Water Reactor design (ABWR) 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 design as NUREG-1793. The staff issued the FSER for the DC of the Economic, Simplified, Boiling-Water Reactor (ESBWR) design by letter dated March 9, 2011. It is available at ADAMS Accession No. ML103470210. In addition, although it relates to the staff review of license applications requesting risk-informed changes to an applicant’s licensing bases, Section A.11 of SRP Section 19.2 lists documents that the staff could use as reference or background material during the review process. The bibliography lists documents by category, covering desirable PRA attributes, review of the PRA, uncertainty and sensitivity analyses, and use of the PRA in risk ranking. It also provides a bibliography for aspects of PRA modeling (e.g., initiating events, CCF modeling, human performance modeling). As expressed in