Another advanced technique utilized to quantify the level of wall loss in difficult-to-access sections of piping.

The QSR system provide an efficient and accurate means by which to assess:

• Remaining wall measurements under external corrosion scabs without the need to remove any of the corrosion material.
• Remaining wall measurements of Corrosion Under Pipe Supports without the need to lift the line for a direct assessment.
• Evaluation of partially buried/embedded lengths of piping.
• Evaluation of areas of overlapping internal and external corrosion – as an ILI follow-up method for example.