This case study explains how PureHM's Spectrum XLI above-ground inspection platform was successfully used to locate buried uncoated flanges. 
Project summary
  • CP levels for a portion of the pipeline did not meet regulatory requirement
  • Engineering assessment indicated uncoated flanges were consuming excess CP current
  • Lacked construction records with location of uncoated flanges
  • Integrated indirect inspection performed using Spectrum XLI
  • All three uncoated flanges were located and recoated to improve CP performance
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