Monday, September 17, 2018Example of Spiral Pipe Manufacturing
Spirally welded pipelines (extensively used in liquid transmission pipeline systems) may contain manufacturing anomalies that are susceptible to fatigue growth. To account for the angle of these cracks with respect to the longitudinal pipe axis, modifications to inputs of crack assessment models are required.
Using the widely-used pipeline assessment model CorLAS®, we worked with Enbridge Pipelines to investigate two input modifications:
- Consideration of the normal stress component perpendicular to the angled crack, for which we developed a stress transformation calculator
- Using an effective...