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:
--- SHA-G1, SHA-G2 -------------------- No objection -------------------- Notes -------------------- No objection -------------------- Table 5-2.1-9 Introductory text -------------------- No objection -------------------- SHA-H1, SHA-H2 -------------------- No objection -------------------- Notes -------------------- No objection -------------------- DG-1362, Appendix B, Page B-11 Table B-1. Staff Position on ASME/ANS RA-S Case 1, “Case for ASME/ANS RA-Sb-2013 Standard for Level 1/Large Early Release Frequency Probabilistic Risk Assessment of Nuclear Power Plant Applications,” Technical and Peer Review Requirements of a Level 1, Seismic PRA for the At-Power Operating Mode Index No Issue Position Resolution Table 5-2.1-10 Introductory text -------------------- No objection -------------------- SHA-I1 -------------------- No objection -------------------- SHA-I2 The supporting requirement uses the terms “hazards” and “secondary hazard” interchangeably, which is potentially confusing. Clarification For those secondary hazards that are not screened out, INCLUDE their effect through assessment of the frequency of hazard occurrence and the magnitude, when applicable, of the secondary hazard. Note 2 The last sentence of Note (2) in Table 5- 2.1-10 is vague and unnecessary. Clarification The appropriate approach used to justify the basis and methodology used for screening out secondary hazards is hazard- and site-specific. Justification may be based on available public literature and prior hazard studies. Table 5-2.1-11 Introductory text -------------------- No objection -------------------- SHA-J1, SHA-J2 -------------------- No objection -------------------- Notes -------------------- No objection -------------------- Section 5-2.2 Introductory text -------------------- No objection -------------------- Table 5-2.2-1 HLR-SFR-A through HLR-SFR-F -------------------- No objection -------------------- Table 5-2.2-2 Introductory text -------------------- No