Document: NUREG-0800
Document ID: 7916b088-fb90-4163-84fe-027bd315bcc5
Document Type: srp
Title: REVIEW OF RISK INFORMATION USED TO SUPPORT PERMANENT PLANT-
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0717/ML071700658.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.2
CFR Part: 
CFR Title: 

Content:
ensures that all principles are met. [Subsection III.2.3] • Data, methods, and assessment criteria used to support regulatory decisionmaking must be well documented and available for public review. [Subsection III.4] III. REVIEW PROCEDURES For risk-informed applications, reviewers should ensure that licensees’ submittals meet the principles specified in Subsection II of this SRP section and address the expectations for risk-informed decisionmaking (also specified in Subsection II). This section provides guidance to assist reviewers in making this determination. For consistency, Subsections III.1 through III.4 of this SRP section present this guidance in terms of the four elements of the approach described in Regulatory Guide 1.174, Section 2. III.1 Element 1: Define the Proposed Change In this element, reviewers should verify that the submittal provides enough information to meet the staff’s expectation that all potential safety impacts have been identified and evaluated. In addition, reviewers should be satisfied that, where appropriate, the licensee has identified design and operational aspects of the plant related to the change request that should be enhanced consistent with an improved understanding of their safety significance based on the methodology used to support the proposed relaxation in regulation. These enhancements should be appropriately reflected in changes to the plant’s LB (e.g., technical specification, license conditions, and Final Safety Analysis Report (FSAR). Reviewers must also assess the proposed changes as they relate to the plant’s LB, which specifies how the licensee satisfies certain basic regulatory requirements such as diversity, redundancy, defense-in-depth, and the General Design Criteria. This assessment should include reviewing the engineering (or other pertinent) analysis and data that identify the safety margins and plant design and/or activities conducted to preserve those margins. If exemptions from regulations or