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:
s are reviewed to determine that the results are an appropriate characterization and were developed at a level of detail consistent with the use of the information to support the change request. These detailed results are also compared to the reported inspection locations to determine the relationship between the inspection location, strategies, and degradation mechanisms. The procedures used to determine the failure potential of piping segments are reviewed in accordance with the acceptance criteria in Section II.2.2.4 to verify that the appropriate failure frequency, demand failure, or unavailability mode was used to characterize the impact of failure, and that the determination of the quantitative estimate or group classification is appropriate to the failure mode. The licensee’s treatment of uncertainties in failure potential determination and all conclusions are reviewed. The incorporation of the findings of the uncertainty analyses into the final decisionmaking process is reviewed. When a computer code is used to develop a quantitative estimate, verification and validation of the computer code that implements the probabilistic fracture mechanics techniques is reviewed. When expert elicitation is used, the selection and training of the experts and the elicitation process is reviewed. When the failure potential is determined by classifying the failures into groups, the applicability of the classification scheme is reviewed. III.2.2.5 Consequences of Failure The reviewer verifies that the licensee has considered both direct and indirect effects of each segment failure. The guidelines for determining the direct and, in particular, the indirect effects of pipe failure on plant equipment should be reviewed. The reviewer should verify that these guidelines have been consistently applied and that the results of the analysis are well documented. Guidelines for evaluating the consequence of different leak sizes and selecting the most severe consequence should also be