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:
ic conclusions from a compilation of the plant-specific data. In addition, there are benefits from cross-comparison of the results of the plant-specific evaluations. 2. Perform Engineering Analysis A. Traditional Engineering Evaluation (i) Compliance with Current Regulations. In evaluating proposed TS changes the licensee must ensure that the current regulations, orders, and license conditions are met, consistent with Principle 1 of risk-informed regulation. The NRC TS regulations are stated in 10 CFR 50.36, "Technical Specifications." Additional information as to NRC TS policies is in the "NRC Final Policy Statement on Technical Specification Improvements for Nuclear Power Reactors" (58 FR 39132) of July 22, 1993 (Reference 10). These documents define the main TS 16.1-11 Revision 1 - March 2007 elements and state criteria for items to be included in the TS. The final policy statement and the statement of considerations for 10 CFR 50.36 (60 FR 36953) of July 19, 1995, (Reference 11), also address probabilistic approaches to TS improvement. Regulations of application for and issuance of license amendments are in 10 CFR 50.90 (Reference 17), 10 CFR 50.91 (Reference 18), and 10 CFR 50.92 (Reference 14). In addition, the licensee should ensure that any discrepancies between the proposed TS change and licensee commitments are considered in the evaluation. (ii) Evaluation of Defense-in-Depth Attributes & Safety Margins. The engineering evaluations should show that the fundamental safety principles for the plant design are not compromised. Design-basis accidents, a combination of postulated challenges and failure events against which plants are designed with features for adequate and safe response, play a central role in nuclear power plant design. During the design process, plant response and safety margins are evaluated by assumptions intended to be conservative. National standards and engineering considerations like defense-in-depth attributes and the single-failure