Pipeline Defect Assessment

In a perfect world, there should be no imperfections or defects…. and don’t we all wish we lived in a perfect world! Even before an asset is operational, imperfections or defects can be introduced during the manufacture, installation, pre‑commissioning, wet storing, and commissioning phases. Threats effecting both internal and external surfaces of a pipeline are common.

Best practice Integrity Management tells us to identify imperfections or “features” and monitor their behaviour over time. As the feature becomes a higher risk to integrity we upgrade them to the status of “anomaly”. We determine this by setting up pre‑defined integrity threat acceptance criteria to measure against. All anomalies are reviewed and engineering assessment may be required to quantify the threat and assure future fitness for service requirements.

Atteris provides expertise engineering services to assess all types of pipeline anomalies, to determine integrity risk and to present practical solutions for mitigation as required.

Typical assessments we perform are for corrosion features, dents, gouges, weld defects, freespans, scour, global buckles, axial walking, fatigue, stability and damage to ancillary items.

Our broad range of assessment tools includes being the only Australian engineering company to be a Joint Industry Participant in the internationally recognised Pipeline Defect Assessment Manual (PDAM), providing definitive and comprehensive industry best practice and a complete suite of assessment tools.

Engineering and fitness for service assessments maybe requested during the:

  • Execute phase, where design requirements have not been met or a deviation has resulted in a revised integrity limit
  • Operate phase, where existing threats have grown to be a concern or new threats have been identified
  • Or at end of life to support life extension or assessment of decommissioning options.