Document: NUREG-0800
Document ID: 8dd882f4-a34f-4415-acd1-ebb441c72786
Document Type: srp
Title: PROBABILISTIC RISK ASSESSMENT AND SEVERE ACCIDENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1213/ML12132A481.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
CFR Part: 
CFR Title: 

Content:
n, and make the evaluation findings described in this SRP section. In accordance with the Statement of Consideration for the revised Part 52 (72 FR 49387), the U.S. Nuclear Regulatory Commission (NRC) expects that, generally, the information that it needs to perform its review of an application from a PRA perspective is that information contained in the applicant’s FSAR Chapter 19. The staff should issue a request for additional information (RAI) and conduct audits of the complete PRA (e.g., models, analyses, data, and codes) to obtain clarifying information as needed. The staff will document any NRC audits performed in audit reports so that they may be referenced in the staff’s Safety Evaluation Report (SER). However, neither the RAI process nor onsite audits should be used to supplement an incomplete application. Section IV.A.2.a in each existing design certification rule (DCR) requires COL applicants to provide a plant-specific design control document (DCD) containing the same type of information and using the same organization and numbering as the generic DCD. This applies to the description of the PRA and its results included in Chapter 19 of the FSAR, but does not apply to the PRA that supports a COL application (including, but not limited to, the event tree analyses, the fault tree analyses, the data analyses, the human reliability analyses, the PRA computer model). Furthermore, Section IV.A.2.a in each existing DCR applies to the overall content and organization of information among the FSAR chapters, but does not apply to the content or organization of information within each FSAR chapter. Specifically, Chapter 19 of each plant-specific FSAR must describe the PRA and severe accident evaluations; however, the format of information within Chapter 19 is left to the discretion of each COL applicant. The staff should ensure that applicants’ FSAR Chapter 19 contains the information needed to review the COL application, regardless of how the information is