This report documents the full-scale testing efforts undertaken to evaluate the capabilities and limitations of Large Standoff Magnetometry (LSM) technology from the perspective of quantifying stresses or strains in a pipeline subjected to geohazard loading conditions.
The fundamental motivation behind this project is motivated by the need for developing LSM as a global non-destructive evaluation (NDE) technique to supplement the traditional approach for estimating pipeline curvature/strain in geohazard loading scenarios. The goal of the full-scale testing was to bend a representative, real-world...
The fundamental motivation behind this project is motivated by the need for developing LSM as a global non-destructive evaluation (NDE) technique to supplement the traditional approach for estimating pipeline curvature/strain in geohazard loading scenarios. The goal of the full-scale testing was to bend a representative, real-world pipe sample to predetermined loading/deflection levels, scan the bent pipe using LSM technologies from multiple vendors, and then compare the stress/strain results provided by the LSM results to those that are directly measured during the test – effectively validating the technology and increasing confidence in the use of LSM for pipeline curvature/strain measurement.
The report discusses the basis of the design for the full-scale testing setup, measured data during the tests, and the LSM results provided by the two vendors (Speir Hunter and Transkor). The discussion provided in this document will be valuable for operators in understanding applicability, gaps, and potential improvements in the LSM technology in the context of curvature/strain estimation originating from geohazard loading conditions.
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