Document: NUREG-0800
Document ID: 7f6b0af0-d79e-4704-9eac-aa03109a7731
Document Type: srp
Title: RISK-INFORMED DECISIONMAKING: TECHNICAL SPECIFICATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0425/ML042520260.pdf
Revision Date: 2023-06
Chapter: 16
Section ID: 16.1
CFR Part: 
CFR Title: 

Content:
w Plan (SRP) Chapter 19 (Ref. 13) describes a four-element approach for evaluating risk-informed regulatory changes. The individual elements are described in detail in Section 1, "Areas of Review," of SRP Chapter 19. The areas of review for each of these elements as they relate to TS changes are discussed below. Element 1: Define the Proposed Change The reviewer should confirm that the licensee has explicitly identified the particular TS that are affected by the proposed change and has identified available engineering studies (e.g., topical reports), methods, codes, and PRA studies that are related to the proposed change. The licensee should also determine how the affected systems, components, or parameters are modeled in the PRA and should identify all elements of the PRA that the change impacts. This information should be used collectively to provide a description of the TS change and to outline the method of analysis. The licensee should describe the proposed change and how it meets the objectives of the Commission's PRA Policy Statement, including enhanced decisionmaking, more efficient use of resources, and reduction of unnecessary burden. Section III.A provides a description of the review process for Element 1. Element 2: Perform Engineering Analysis The reviewer should confirm that the licensee has examined the proposed TS change to verify that it meets existing applicable rules and regulations. In addition, the licensee should determine how the change impacts defense-in-depth-aspects of the plant's design and operation and should determine the adequacy of safety margins following the proposed change. The licensee should consider how plant and industry operating experience relates to the proposed change, and whether potential compensatory measures could be taken to offset any negative impact from the proposed change. The licensee should also perform risk-inforned evaluations of the proposed change to determine the impact on plant risk. The evaluation should