AUT System Pod Based on Pipe WIZARD V2

Based on the objective experimental data and pipeline girth weld inspection results by the AUT system with separate TOFD probes using threshold setting up 20% and 40%, the statistical results of defect height were obtained. By combining these results with macro slicing data of the defects and through mathematical modeling, a “flaw height-POD” curve was established under the condition of achieving 90% detection rate with 95% reliability as a qualified standard. A quantitative analysis and comparison was made for the AUT system on its detection ability in order to put forward suggestions for different acceptance standards (including the ECA and WORKMANSHIP) with related inspection thresholds.