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:
3. The process by which the traditional engineering analysis addresses the relevant regulations and the currently approved requirements of the plant is reviewed to confirm that the regulations are met and the intent of the ASME B&PVC to maintain integrity of reactor coolant system boundary by ISI is preserved under the RI-ISI program. The documentation providing input to the integrated decisionmaking process is reviewed to ensure that all applicable risk insights, key principles, and supporting elements were addressed and communicated to the final decisionmaking panel. The documentation of the panel deliberations, recommendations, and findings should be reviewed to ensure that all relevant risk-informed insights were incorporated into the final program description. After the RI-ISI program is approved and initiated, plant performance should be supported by inspection and analysis and maintained by programmatic activities goals by comparison against specific performance goals. The acceptability of the selection of locations to be inspected is reviewed for compliance with the acceptance criteria in Section II.2.3 of this SRP. Risk measures used are reviewed to determine that appropriate thresholds are used to rank the safety significance of the piping segments. The risk ranking process is reviewed to ensure that it is capable of systematically identifying all safety significant pipe segments, including those that are not included under ASME B&PVC Section XI as appropriate. The procedure used to further review piping segments and piping structural elements that may be inappropriately identified as low safety significant is reviewed to verify that the PRA limitations, operational insights, industry pipe failure data, and Maintenance Rule insights are taken into consideration. In addition, the procedures used to determine the ISI program for piping that are subject to ISI under ASME XI requirements but have no segments or piping structural elements exceeding the