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:
jection -------------------- Table 3-2.3-1 -------------------- No objection -------------------- Tables 3-2.3-2(a) thru 3-2.3-3(b) IFSN-A1 thru IFSN-A5, IFSN-A-7 thru IFSN-A17 -------------------- No objection -------------------- DG-1362, Appendix A, Page A-21 Table A-3. Staff Position on ASME/ANS RA-Sa-2008 Part 3, Technical and Peer Review Requirements for At-Power Internal Flood Index No Issue Position Resolution IFSN-A6 For Cat II, it is not acceptable to just note that a flood-induced failure mechanism is not included in the scope of the internal flooding analysis. Some level of assessment is required. Qualification Cat I: For the SSCs identified in IFSN-A5, IDENTIFY the susceptibility of each SSC in a flood area to flood-induced failure mechanisms. INCLUDE failure by submergence and spray in the identification process. EITHER: (a) ASSESS… by using conservative assumptions; OR (b) NOTE that these mechanisms are not included in the scope of the evaluation. Cat II: For the SSCs identified in IFSN-A5, IDENTIFY the susceptibility of each SSC in a flood area to flood-induced failure mechanisms. INCLUDE failure by submergence and spray in the identification process. ASSESS qualitatively the impact of flood-induced mechanisms that are not formally addressed (e.g., using the mechanisms listed under Capability Category III of this requirement), by using conservative assumptions. IFSN-B1 thru IFSN-B3 -------------------- No objection -------------------- 3-2.4 – IFEV 3-2.4.1 -------------------- No objection -------------------- Table 3-2.4-1 -------------------- No objection -------------------- Tables 3-2.4-2(a) thru 3-2.4-3(b) IFEV-A1 thru IFEV-A8 -------------------- No objection -------------------- IFEV-B1 thru IFEV-B3 -------------------- No objection -------------------- 3-2.5 – IFQU DG-1362, Appendix A, Page A-22 Table A-3. Staff Position on ASME/ANS RA-Sa-2008 Part 3, Technical and Peer Review Requirements for At-Power Internal Flood Index No Issue