Report

PR719-243812-Z01 Addendum to API 1163 Performance Validation Guidelines Crack and Dent

Abstract

The addendum summarizes 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.

– Measurement Error Model: field measurement error is characterized by a ratio of the ILI to field error. The ILI is modelled as having either a systematic bias or a linear regression to true dimensions.

– Subset Data: multiple subsets of data can be analyzed separately. Incorporating data sub-sets 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. Only reported anomalies are included in the revised POI calculation.

– 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.

The five (5) files included in this zipped deliverable package are:

1) PR719-243812-R01 Addendum to API 1163 Performance Validation Guidelines – Crack and Dent.pdf

2) PR719-223803-R01 API 1163 Performance Validation Guidelines.pdf

3) PR719-223803-M01 API 1163 Performance Validation Guidelines Spreadsheet User Guide.pdf

4) PR719-243812-E01 API 1163 Performance Validation Spreadsheet Tool.xlsx

5) PRCI Spreadsheet EULA.pdf

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