The purpose of this Webinar is to summarize additions to the Microsoft® Excel® Spreadsheet tool developed in project number IM-1-06 for the practical implementation of the measurement performance validation methodology outlined in the API RP 1163 2021 Edition (API 1163-2021). The addendum covers the following new features

· Crack and Dent Assessments: the spreadsheet has been updated to consider the additional data columns and attributes necessary to assess the ILI measurement performance of cracks and dents. The updates include incorporating field measurement errors, the ability to input both length and depth measurements, and handling data subsets.

· Field Measurement Error: field measurement error is characterized by a ratio of the ILI to field error. It is modelled as either a systematic bias or a linear regression.

· Subset Data: multiple subsets of data can be analyzed separately. Incorporating data subsets allows operators to compare the measurement performance for categories of interest.

· Simplification of the Probability of Identification: POI has been simplified by assuming the field-identified anomaly type is correct. The POI is calculated for each anomaly type in the dataset.

· Expansion of Level 2 and Level 3 Tests: the null hypothesis and tolerance interval estimate methods have been expanded to perform retrospective analysis of the Level 2 test and one-sided Level 3 tests.

· Burst Pressure Comparison: the spreadsheet has been updated to include additional data inputs for comparing the Failure Pressure Ratio (FPR) estimates derived from ILI measurements and field measurements.