Document: NRC Regulatory Guide
Document ID: 8a2332d3-66ca-40af-84e1-507db8b26559
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:
Table A-7. Staff Position on ASME/ANS RA-S-1.4-2021, Technical Requirements for Human Reliability Analysis Index No. Issue Position Resolution HR-D1 through HR-D3 ------------------------ No objection ---------------------------------- HR-D4 The detailed human error probability (HEP) assessments for an operating plant would not be realistic due to not including the information listed in the CC-II of HR- D4. Using the phrase “when available,” with respect to an operating plant, may result in the CC-II of HR-D4 being interpreted as not applicable due to the information not being available. For an operating plant, this information should be available. Clarification CC-II For each detailed HEP assessment, INCLUDE in the evaluation process the following plant- or design- specific relevant information when available: HR-D5 ------------------------ No objection ---------------------------------- HR-D6 The recovery of pre- initiator errors assessment would be incomplete due to not using all the information listed in HR-D6. By using the phrase “if available,” HR-D6 may be interpreted as not applicable due to the information not being available. For an operating plant, all the information listed in HR-D6 should be available. Clarification For operating plants, if recovery of pre-initiator errors is credited, USE the following information, if available, to assess the potential... HR-D7 through HR-D10 ------------------------ No objection ---------------------------------- RG 1.247, Appendix A, Page A-16 Table A-7. Staff Position on ASME/ANS RA-S-1.4-2021, Technical Requirements for Human Reliability Analysis Index No. Issue Position Resolution Table 4.3.6.1-6 HR-E1 through HR-E3 ------------------------ No objection ---------------------------------- HR-E4 Not including errors of commission (EOCs) presumes that EOCs are not important or significant contributors to NLWR PRA; however, it is currently not known whether that is the case. Though there is significant