NDT Inspection Services For Tube Bundles, Heat Exchangers, Condensers, Oil Coolers & Air Conditioning Units

Fairtex Group provide Eddy Current Inspection and using eddy current inspection techniques quickly detect tube corrosion, pits, wall loss and cracks.

Eddy Current is a test in which a coil generates an alternating magnetic field. This creates Eddy Currents in the tube wall and any defects in the tube influence the course of these Eddy Currents. The Eddy Currents in the tube wall also causes a magnetic field. A comparison of the changes between these two magnetic fields provides information about the status of the tube wall at that point.

ECT detects and quantifies both local defects such as pitting and the formation of cracks, and a general reduction in wall thickness. Internal and external defects can be detected and distinguished. The filling factor is essential for the sensitivity and reliability of the inspection. That is why it is essential that the tubes have been cleaned prior to any test be carried out so that the largest possible measurement probe can be used. All of the magnetic particles of the tube also need to be removed in order to minimize any possible interruptions of the signal.

Eddy current testing(ECT) is based on the principle of measuring changes in the impedance of an electromagnetic coil as it is scanned over a surface of conductive material and is suitable for the inspection of non-ferritic pipes

EDDY CURRENT INSPECTION (ECT)

• Suitable for Non Ferrous Tubing such as SS304 /316, Brass, Titanium / Inconel / Copper / Copper Nickel etc


• Can Detect Pits / Corrosion / Erosion / Axial Cracking


• Uses Multiple Frequencies for Better Analysis and Flaw Sizing


• The Probe needs a good fill factor to remain sensitive


• Probe centering is important for uniform sensitivity


• Very Fast Technique