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Eddy Current Testing in the
Petrochemical Industry
Figure 4-6
Figure 4 - Testing heat exchanger tubing using a multifrequency system. Eddy current testing detects pits, cracks and wall loss in nonferromagnetic tubes at up to 1.8 m/s (6 ft/s)
Figure 5 - A graphical report of heat exchanger testing. The test was done by first testing a 10% sample and then expanding the scope in areas where any damage was detected. The colors represented the range of discontinuity depths.
Figure 6 - Testing for cracks under or just behind the tubesheet using a motorized rotating probe.
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