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:
------------------- 5-2.1 – SHA 5-2.1 -------------------- No objection -------------------- Table 5-2.1.1, HLR-SHA-A thru HLR-SHA-F, HLR-SHA-J -------------------- No objection -------------------- Table 5-2.1-1, HLR-SHA-G Much of the HLR is more how to meet the HLR and should be a SR. Further, the SRs provide the requirements needed in order to meet the HLR. This relationship does not exist here. In addition, this information is also duplicated in the accompanying note. At the least, this text should be removed from the HLR. Clarification For further use in the SPRA, the spectral shape SHALL be based on a site-specific evaluation taking into account the contributions of deaggregated magnitude-distance results of the probabilistic seismic hazard analysis. Broad-band, smooth spectral shapes, ... that would challenge these uniform hazard spectral shapes. Table 5-2.1-1, HLR-SHA-H Much of the HLR is more how to meet the HLR and should be a SR. Further, the SRs provide the requirements needed in order to meet the HLR. This relationship does not exist here. Clarification When use ... for the intended application. It shall be confirmed that the basic data and interpretations from an existing study are valid. Table 5-2.1-1, HLR-SHA-I Much of the HLR is more how to meet the HLR and should be a SR. Further, the SRs provide the requirements needed in order to meet the HLR. This Clarification A screening analysis ... or the magnitude of hazard consequences, or both. The hazard analysis shall include hazards other than vibratory ground motion if necessary. DG-1362, Appendix A, Page A-35 Table A-5. Staff Position on ASME/ANS RA-Sa-2009 Part 5, Technical and Peer Review Requirements for At-Power Seismic Events Index No Issue Position Resolution relationship does not exist here. Tables 5-2.1-2(a) to 5-2.1-10(j) SHA-A1 thru SHA-A5 -------------------- No objection -------------------- SHA-B1 thru SHA-B3 -------------------- No objection -------------------- SHA-C1 thru SHA-C4