Document: NUREG-0800
Document ID: 32179098-f78d-4852-9c29-1e5e3abb2705
Document Type: srp
Title: RISK-INFORMED DECISION MAKING:  TECHNICAL SPECIFICATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0703/ML070380228.pdf
Revision Date: 2023-06
Chapter: 16
Section ID: 16.1
CFR Part: 
CFR Title: 

Content:
- March 2007 1. Element 1: Define the Proposed Change. The reviewer should confirm that the licensee has explicitly identified the particular TSs affected by the proposed change and has cited related available engineering studies (e.g., topical reports), methods, codes, and PRA studies. The licensee also should determine how affected systems, components, or parameters are modeled in the PRA and identify all PRA elements affected by the change. This information collectively should describe the TS change and outline the method of analysis. The licensee should describe the proposed change and how it meets the Commission's PRA Policy Statement objectives of enhanced decision-making, more efficient use of resources, and reduction of unnecessary burden. 2. Element 2: Perform Engineering Analysis. The reviewer should confirm whether the licensee has examined the proposed TS change to verify that it meets applicable rules and regulations. In addition, the licensee should determine the change’s impact on defense-in-depth aspects of the plant's design and operation and the adequacy of safety margins following the proposed change. The licensee should consider how plant and industry operating experience and whether potential compensatory measures could be taken to offset any negative impact of the proposed change. The licensee also should evaluate the proposed change for impact on plant risk. The evaluation explicitly should consider the specific plant equipment affected by the proposed TS changes and the effects on the functionality, reliability, and availability of the equipment. The necessary scope and level of detail of the analysis depend on the particular systems and functions affected, and there are cases for which a qualitative, rather than quantitative, risk analysis is acceptable. The licensee should state the rationale supporting the acceptability of proposed changes by integrating probabilistic insights with traditional considerations for a final risk