Document: NRC Regulatory Guide
Document ID: 22ccfd5e-c5d8-4615-a02c-32369aa9f533
Document Type: regulatory_guide
Title: Acceptability of Probabilistic Risk Assessment Results for Risk-Informed Activities (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1930/ML19308B636.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.200
CFR Part: 
CFR Title: 

Content:
ened physical analysis unit can be either bounded or accurately characterized and such that the risk… FSS-E1 thru FSS-E4 -------------------- No objection -------------------- FSS-F1 Use of the term “SELECT one or more” Clarification Cat II and II: …SELECT one or more fire scenarios(s) a sufficient number of fire scenarios to characterize could damage, including collapse, of the exposed structural steel… FSS-F2, FSS-F3 -------------------- No objection -------------------- FSS-G1 thru FSS-G6 -------------------- No objection -------------------- DG-1362, Appendix A, Page A-29 Table A-4. Staff Position on ASME/ANS RA-Sa-2009 Part 4, Technical and Peer Review Requirements for At-Power Internal Fire Index No Issue Position Resolution FSS-H1 thru FSS-H10 -------------------- No objection -------------------- 4-2.7 – IGN 4-2.7 -------------------- No objection -------------------- Table 4-2.7-1 -------------------- No objection -------------------- Tables 4-2.7-2(a) thru 4-2.7-3(b) IGN-A1 The note, IGN-A1-1, appears to be more relevant to IGN-A2 than it is for IGN-A1. Item (e) only makes sense when there is equivalent nuclear experience. Clarification NOTE IGN-A1-1…(e) if being used as a supplement to, rather than in lieu of, nuclear data, that the fire frequencies calculated are consistent with those derived from nuclear experience ; … IGN-A2 thru IGN-A10 -------------------- No objection -------------------- IGN-B1 thru IGN-B5 -------------------- No objection -------------------- 4-2.8 – QNS 4-2.8 -------------------- No objection -------------------- Table 4-2.8-1 -------------------- No objection -------------------- Tables 4-2.8-2(a) thru 4-2.8-5(d) QNS-A1 -------------------- No objection -------------------- QNS-B1, QNS-B2 -------------------- No objection -------------------- DG-1362, Appendix A, Page A-30 Table A-4. Staff Position on ASME/ANS RA-Sa-2009 Part 4, Technical and Peer Review Requirements for At-Power Internal Fire Index No Issue