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
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Content:
e has been adequately characterized. 3. Added a statement describing requirements in 10 CFR 52.79(a)(1) for COL applicants. 4. Added statements describing Commission expectations regarding containment performance and SMA. 5. Added several statements describing Commission expectations for use of the PRA in advanced reactor design and licensing. 6. Added (1) a statement to indicate that the PRA is not part of the design bases and therefore not subject to quality assurance requirements in 10 CFR Part 50, Appendix B, and (2) guidelines that establish, at a high level, acceptable elements for a quality assurance program. 7. Several statements were added that describe the staff’s acceptance criteria for technical adequacy of the PRA, including the stanadards and guidance that will be applied. 8. Two statements were added that 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 statmement was added that describes acceptance criteria pertaining to description of the PRA maintenance program in Chapter 19 of the FSAR. 11. A statmement was added that describes acceptance criteria pertaining to description of the PRA upgrade program in Chapter 19 of the FSAR. 12. A statement was added describing acceptable methods for determining tornado frequencies. 13. A statmement was added identifying an acceptable method for evaluating containment structural integrity for internal pressure loadings above design-basis pressure. 19.0-41 Draft Revision 3 – September 2012 14. Several statements were added that describe the acceptance criteria for PRA-based SMA previously contained in DC/COL-ISG-20. III. REVIEW PROCEDURES 1. A statement was added emphasizing the need for reviewers to assure that when RAIs