Corrosion Under Insulation Inspection with Pulsed Eddy Current
Corrosion under insulation (CUI) is hidden wall loss on insulated steel pipes and vessels, and pulsed eddy current (PEC) testing measures it without removing the insulation. Asia NDE supplies the BonPEC pulsed eddy current system across Malaysia and Southeast Asia. We serve oil and gas and petrochemical customers, with calibration and repair support from our Subang Jaya office.
What it’s used for
- Screening insulated pipework and vessels for corrosion under insulation.
- Measuring wall loss through coatings, fireproofing, concrete and marine growth.
- Inspecting splash zones, above and below water.
- Monitoring wall thickness over time, including through repair wraps.
Products in this category
1 product
Frequently asked questions
Can you check for corrosion under insulation without removing the insulation?
Yes. Pulsed eddy current (PEC) testing measures the average remaining wall thickness of carbon steel through insulation, sheeting, coatings and fireproofing, with no surface cleaning. It is used to screen large areas quickly. Suspect areas can then be opened up and checked in detail.
What can pulsed eddy current inspect?
Pulsed eddy current is used on carbon steel pipes, vessels and tanks. It measures through insulation, aluminium or stainless steel sheeting, coatings, fireproofing, concrete and marine growth, above and below water. It gives an average wall thickness under the probe, so it is a screening method rather than a pit-depth measurement.