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At TesTex, we know your turnaround depends on our turnaround.


TesTex uses a variety of state-of-the-art electromagnetic techniques to scan for defects in both ferrous and nonferrous materials and structures.

LFET Products

Low Frequency Electromagnetic Technique (LFET) products are used to inspect storage tanks, other convex or concave ferrous surfaces, as well as nonferrous metal tubing/piping surfaces.

RFET Products

Remote Field Electromagnetic Technique (RFET) products are used to quickly and accurately inspect ferrous tubing found in heat exchangers and drum-to-drum boiler generating banks.

BFET Products

Balance Field Electromagnetic Technique (BFET) products are used to detect surface and sub-surface cracking in welds and base metals.

ECT Products

Eddy Current Technique (ECT) is used to quickly and accurately inspect non-ferrous metal tubing from the tube internal dimension (ID).


TesTex has enhanced ultrasonic (UT) inspection for many different applications, including tank shells, UT prove-ups, finned tubes and waterwalls.


TesTex produces standard and custom probes (and calibration tubes) for all of its ID (internal dimension) inspection equipment.


This is a great place to check out Technical papers, Case Studies, and any other relevant news related to our specialized non-destructive testing products and services.

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Corrosion Fatigue Cracking Inspections at LG&E

Corrosion Fatigue Cracking

For smaller diameter tubes, TesTex developed a rotating probe to examine the straight sections for corrosion fatigue cracking. Each size tube and wall thickness takes a specially designed probe to ensure proper expansion of BFET sensors for optimal results.

TesTex also has a Multi Channel BFET probe that is used as a screening tool for detecting cracks in boiler tubes from the inside surface.

TesTex would use a Borescope to inspect the tube for cracking and notes any locations. Once the locations are noted, the BFET probe is inserted and pushed to that location. The rotating BFET probe measures the signal response to size the depth of the cracking.


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