Tutorial 3 - Pipeline Stress Analysis; Black Box or Black Magic (WG 5)


Many steps in the design of a pipeline are considered during the planning of a pipeline, obtaining regulatory approvals, coordination of permanent and temporary workspace, surveying the centreline, design of assemblies, and procurement of materials. Over the last decade changes in materials, crossing methodologies, and (at times) centreline have come because of stress analysis results with many having little understanding of what affects the stress in the pipe, and what inputs are used. This often leads team members to question results, leading them to believe pipeline stress analysis is the work of wizards.

This tutorial will outline the inputs used for a stress analysis, where these inputs come from, and how they can affect the stresses within the pipeline.  It will also outline different modeling methods, how their outputs compare, and the advantages/disadvantages to multiple methods.

The tutorial agenda will include:

  1. An overview of typical pipeline stress analysis inputs and how/where they are obtained.
  2. Different modeling software and methods used for pipeline stress analysis
  3. The effects to stress and displacement outputs caused by changes to inputs

Managers, Pipeline Engineers, Geotechnical Engineers, Construction Personnel who are involved or are responsible for the design and/or planning of pipeline systems will find this tutorial to be or particular interest.  If you have uttered the lines “but we have a pipeline right beside the replacement that isn’t leaking”, “what do you mean you can’t give me results that can work for every single configuration we can come up with in the field while using no heavy wall or screw anchors?”, or “why does changing the soil from stiff clay to muskeg change the results?”, then this tutorial is for you.