Quantitative Nondestructive Pipeline Stress Assessment Tool

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Threats and Integrity Management -- Anomaly Detection and Characterization

The G2MT’s eStress™ system is used in the residual stress assessment of pipeline damage. The system was developed through PHMSA for non-destructive in-service detection of damage severity for steel pipes. The inspection tool measures residual stresses around pipeline damage areas to determine the susceptibility to failure. The technology is coupled with advanced modeling techniques to quantitatively measure the local stress and map the stress around the entire area.

Residual stress is a critical factor that determines the cracking susceptibility of pipeline steels, but existing methods for measuring mechanical damage in pipeline steels are incapable of quantifying the residual stress levels. A larger gouge or dent does not necessarily signify worse damage than a smaller gouge or dent; it is more important to focus on the actual residual stress levels induced by damage.

Increased Safety - Knowledge of the residual stress levels provides an accurate means to assess the severity of the damage and improve the pipeline integrity, ultimately reducing the amount of unnecessary removal and repair applications.

http://www.g2mt.com/nondestructive-testing-residual-stress-pipeline-damage/ https://primis.phmsa.dot.gov/matrix/PrjHome.rdm?prj=441 Generation 2, http://www.g2mt.com/