Evaluation of Classification and Prioritization Criteria Based on the Results of Direct Examinations

摘要

The ECDA process requires a continuous effort from the pipeline operator to improve the reliability of classification and prioritization criteria,Based on the results of the direct examinations, these criteria can be up-graded or down-graded as part of the retrospective evaluation and the number of such re-evaluations can be used as criteria in the long-term assessment of the ECDA effectiveness.This paper covers criteria evaluation and specific lessons learned by comparing the results of the direct examinations with predictions based on indirect inspections and pre-assessment data collected on more than 30 gas pipelines in Ontario, Canada.