Document: NUREG-0800
Document ID: b07c8dd1-23f6-41f1-a3ba-aa378f9ea59a
Document Type: srp
Title: RISK-INFORMED INSERVICE INSPECTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0325/ML032510135.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.8
CFR Part: 
CFR Title: 

Content:
uld provide an acceptable level of quality and safety. General guidelines on judging the acceptability of the engineering evaluations and PRA used to support risk-informed applications are provided in Regulatory Guide 1.174 and SRP Chapter 19.0. A summary of acceptance guidelines for engineering evaluations and selected PRA issues specific to ISI is provided in Regulatory Guide 1.178. II.1 Element 1: Define the Proposed Change to ISI Program The licensee’s RI-ISI submittal should have defined the proposed changes to the ISI program in general terms. The licensee should have confirmed that the plant is designed and operated in accordance with the currently approved requirements and that the PRA used in support of their RI-ISI program submittal reflects the actual plant. The licensee should identify those aspects of the plant’s licensing bases that may be affected by the proposed change, including, but not limited to, rules and regulations, FSAR, technical specifications, and licensing conditions. In addition, the licensee should identify any changes to commitments. The licensee’s programs and procedures that guide future changes to the ISI program without prior NRC approval should provide for engineering analyses, internal reviews, and a degree of traceability consistent with the magnitude of the changes the licensee intends to make. The particular piping systems, segments, and welds that are affected by the change in the ISI program should be identified. Specific revisions to inspection scope, schedules, locations, and techniques should also be identified. In addition, plant systems and functions that rely on the affected piping should be identified. Industry and plant-specific experience with inspection program results should be obtained and characterization relative to the effectiveness of past inspections of the piping and the flaws that have been observed should be described. II.2 Element 2: Engineering Analysis After the proposed changes to the licensee's