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
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at identify specific results from the PRA the staff will need to consider in order to complete its review of Chapter 19 of the FSAR. 9. Guidance was added regarding acceptable approaches for reporting significant risk contributors in Chapter 19 of the DCD and FSAR, including an acceptable interpretation of the term “significant.” 10. A statement was added that describes acceptance criteria pertaining to description of the PRA maintenance program in Chapter 19 of the FSAR. 11. A statement was added that describes acceptance criteria pertaining to description of the PRA upgrade program in Chapter 19 of the FSAR. 19.0-40 Revision 3 – December 2015 12. A statement was added describing acceptable methods for determining tornado frequencies. 13. A statement was added identifying an acceptable method for evaluating containment structural integrity for internal pressure loadings above design-basis pressure. 14. Several statements were added that describe the acceptance criteria for PRA- based SMA previously contained in DC/COL-ISG-20. 15. Statements were added to describe the applicability of RG 1.7 and RG 1.216 to the containment performance assessment which is part of the severe accident evaluation. 16. A footnote was added stating that PRA self-assessment is an acceptable tool for assessing the technical adequacy of a PRA performed in support of an application for a design certification. 17. A footnote was added to describe Min-Max method which used to determine the HCLPF capacity. 18. Additional acceptance criteria for the staff’s review of an applicant’s assessment of risk from accidents that could affect multiple modules in facilities with small modular integral pressurized water reactors (iPWRs) were added. III. REVIEW PROCEDURES 1. A statement was added emphasizing the need for reviewers to assure that when RAIs lead to a substantive change to information in the FSAR or DCD, these documents are revised to reflect the new information. 2. A statement was