Document: NRC Regulatory Guide
Document ID: cde52d5a-adf9-49be-9d1f-59449dfca895
Document Type: regulatory_guide
Title: TRIAL - Acceptability of Probabilistic Risk Assessment Results for Non-Light Water Reactor Risk-Informed Activities
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2123/ML21235A008.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.247
CFR Part: 
CFR Title: 

Content:
cal cyclone-prone coast to screen out tropical cyclone (hurricane or typhoon) high wind hazards from the probabilistic wind hazard analysis; WHA-A6 through WHA-A8 ------------------------ No objection ---------------------------------- Table 4.3.12.1-3 WHA-B1 through WHA-B6 ------------------------ No objection ---------------------------------- Table 4.3.12.1-4 WHA-C1 through WHA-C6 ------------------------ No objection ---------------------------------- Table 4.3.12.1-5 WHA-D1 and WHA-D2 ------------------------ No objection ---------------------------------- RG 1.247, Appendix A, Page A-54 Table A-13. Staff Position on ASME/ANS RA-S-1.4-2021, Technical Requirements for High Winds PRA Index No. Issue Position Resolution Table 4.3.12.1-6 WHA-E1 through WHA-E5 ------------------------ No objection ---------------------------------- Table 4.3.12.1-7 WHA-F1 through WHA-F4 ------------------------ No objection ---------------------------------- Table 4.3.12.1-8 WHA-G1 through WHA-G4 ------------------------ No objection ---------------------------------- Table 4.3.12.2 Section text ------------------------ No objection ---------------------------------- Table 4.3.12.2-1 HLR-WFR-A through HLR-WFR-I ------------------------ No objection ---------------------------------- Table 4.3.12.2-2 WFR-A1 The performance of SSCs under high wind conditions that are not included in the plant response model, but that physically enclose or protect other SSCs included in the plant response model from high wind effects, needs to be considered. Without consideration of the performance of such SSCs, the plant response model may misrepresent how the plant would respond to failures of such SSCs due to high wind effects, which could therefore exclude Clarification INCLUDE in the scope of the Wind Fragility Analysis those SSCs and associated failure modes identified in the plant response analysis, including those that may not be in the base plant model but that enclose or protect other SSCs