Pulsed Eddy Current Array (PECA)
Pulse Eddy Current (PEC) is an electromagnetic inspection technique used to detect wall loss on ferromagnetic structures such as carbon steel & cast iron, without removing the insulation. It provides a relative volumetric measurement converted into an averaged thickness measurement based on the calibration area. This tool was developed for the detection of corrosion under insulation (CUI) & fireproofing (CUF).
This is an excellent technique to be applied on objects that are insulated & also can be applied on objects that are difficult or extreme cost accessible.