ONE REASON EDDY CURRENT IS A POPULAR NDT TECHNIQUE is that it does not require the removal of paint or protective coatings when testing.
Image Source: Eddyfi
ECT also doesn't require you to close down operations to test. Newer technologies, such as EddyFi's Sharck probes, feature tangential eddy current array (TECA) technology and are capable of positioning, measuring, and sizing cracks in carbon steels up to 7mm (0.28").
WITH TECHNOLOGY IMPROVING EACH DAY, ECT continues to provide accurate, non-invasive testing of assets under insulation.