Peace River Abandoned Pipeline Segment Field Study

Plex Projects

March 17, 2020

Executive Summary

The Pipeline Abandonment Research Steering Committee (PARSC) a working body within the Petroleum Technology Alliance of Canada (PTAC) commissioned Jacobs and Plex Projects Inc. to undertake a subsurface assessment on a segment of NGTL Peace River Mainline (PRML), abandoned between 1972 and 1979. The project objectives are to collect, analyze, and compare the data collected in situ, against the calculated models.

The field assessment of the pipeline was completed near the Dryden Creek compressor station on July 4 and 5, 2019 and included the following activities:

• A visual assessment for soil subsidence.
• Excavation of PRML and performing the following:
  • Visual inspection of pipeline and coating.
  • Sandblasting to expose bare steel.
  • Visual inspection of bare pipe.
  • Measurements of corrosion severity, wall loss and feature depths.
• Documentation of activities, outcomes, methodologies, and observations.

Final Report