Document: NUREG-0800
Document ID: 0d034ca5-ee9b-43ca-a6d6-b08e537d605b
Document Type: srp
Title: Determining the Technical Adequacy of Probabilistic Risk
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0625/ML062510220.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.1
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the PRA results in an integrated decision-making process. This SRP chapter may also be used to support novel applications in which the licensee is expected to identify how the PRA results are used to provide information to the decision makers. This SRP chapter does not focus on the decision-making process itself, which is addressed in the application-specific SRP chapters. REVIEW RESPONSIBILITIES The technical nature of a licensee's request will determine which technical review branch in the NRC's Office of Nuclear Reactor Regulation (NRR) will serve as the primary review branch and, as such, have overall responsibility for leading the technical review, drafting the staff safety evaluation report (SER) or other appropriate regulatory document, and coordinating input from other technical review organizations. The A or B PRA Licensing Branch Branch (APLA or APLB) assists the primary review branch (upon request) by reviewing the PRA information and findings submitted by the licensee. Review support includes assessing the adequacy of the scope, level of detail, and technical adequacy of the PRA used by the licensee to support the regulatory change. 1 In this SRP, a part of a PRA can be understood as being equivalent to that piece of the analysis for which an applicable PRA standard identifies a supporting level requirement. 5 I. AREAS OF REVIEW This SRP is intended to support the staff in its assessment of the technical adequacy of the PRA model used to generate results to support a risk-informed submittal. As such, it applies to all the parts1 of a PRA that support the results. II. ACCEPTANCE CRITERIA In order for the NRC staff to conclude that a PRA is of sufficient technical adequacy to support an application, the staff needs to be assured that (1) the parts of the PRA needed to support the application have been appropriately identified and (2) those parts have been performed in a manner consistent with current good PRA practice. The former needs to be addressed as