Document: NUREG-0800
Document ID: 4f0d611c-d3fb-43e5-ab91-e7f7b4de3511
Document Type: srp
Title: Determining the Technical Adequacy of Probabilistic Risk
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0406/ML040630300.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.1
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ormance with the ASME PRA standard. This guidance supplements and will ultimately become part of NEI-00-02 (per NEI, Ref. 6). This additional guidance contains: 1. Self-assessment guidance document 2. Appendix 1, actions for industry self assessment 3. Appendix 2, industry peer review subtier criteria. Concerns regarding PRA quality and the standards development effort were discussed during the March 31, 2000, Commission briefing on the Risk-Informed Regulation Implementation Plan. The Commission, in their April 18, 2000, Staff Requirements Memorandum (SRM) (Ref. 7) on that briefing, indicated that the staff “should provide its recommendations to the Commission for addressing the issue of PRA quality until the ASME and ANS standards have been completed, including the potential role of an industry PRA certification process.” In response to the Commission’s SRM dated April 18, 2000, the staff issued SECY-00-162, “Addressing PRA Quality in Risk-Informed Activities” (Ref. 8), which described an approach for addressing PRA quality, including identification of the scope and minimal functional attributes necessary to ensure that the PRA information is adequate for its intended application in decision making. The Commission, in their October 27, 2000, SRM, indicated that the “. . . the timely resolution of PRA quality requirements is necessary to support existing and developing risk-informed regulation . . . .” (Ref. 9). This Standard Review Plan (SRP) Chapter 19.1 and the associated Regulatory Guide 1.200 (Ref. 10) have been developed in response to this SRM. In developing this SRP chapter, the staff considered the NRC's guidance on the use of PRA in risk-informed regulatory applications as documented in Regulatory Guide 1.174 (Ref. 11) and the associated SRP Chapter 19 (Ref. 12). These documents make it clear that PRA information is one input into making a decision. Specifically, the decision-making process will use the results of the risk analyses in a