September 17, 2018

The pipeline industry has established various methodologies to estimate corrosion growth in pipelines. However, growth of corrosion feature length is inconsistently addressed in these methods.

We worked with Enbridge Pipelines to review these methodologies and determine the impact of feature length on corrosion burst pressure predictions.

This review:

  • Considered methodologies that are applicable to both feature lengths and depths;
  • Evaluated the ability to use the methodologies to identify unsafe defects using estimated burst pressure from repeated in-line inspections; and
  • Compared findings with feature depth only analysis to understand the impact of feature length on results.

Chance Wright is presenting findings of this review at the upcoming International Pipeline Conference in Calgary, Alberta on September 26, 2018 at 8:30 to 10:00 a.m. The presentation will be in room MacLeod Hall D. You will learn about the methodologies evaluated and the effects of feature length on the accuracy of burst failure predictions.

The entire paper – “Evaluation of Corrosion Growth Prediction Methodologies Using Burst Pressure Comparisons from Repeated In-line Inspections “- is available through the 2018 International Pipeline Conference.

Chance Wright is a Junior Research Engineer in the Integrity & Operations department at C-FER Technologies. His focus is assessing corrosion growth and pipeline reliability using C-FER’s PIRAMIDTM software.

Effect of Defect Length Growth on Pipelines

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