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Technology Application
LFET RFET BFET ECT Ultrasound OSET Support

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


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LFET RFET BFET ECT Ultrasound OSET Support
Boiler Tubes AGS Tanks Pipelines Feedwater Heaters Heat Exchangers Finned Tubes Condensers Welds
Radio Field Electromagnetic Technique Triton RFET
Balance Field Electromagnetic Technique Triton BFET
Off Surface Electromagnetic Technique OSET - Scout
Ultrasonic Inspection Helix XT IRIS Echo 20/20

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

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Penstock Inspections

TesTex’s Line Crawler

TesTex developed the Line Crawler to be able to provide video and LFET scans of Penstock lines.

Line Crawler sitting inside 34″ penstock

Line Crawler features:

  • Contains 8 modified LFET Pods, a modified Mux Box and Falcon Electronics
  • The Viper drive is modified for better traction and has a flexible coupling so it can be manually adjusted to fit a range of pipe sizes
  • Has Three IR cameras mounted to the assembly for forward and backward vision while remote steering
  • The third camera provides a downward view of the penstock surface being scanned. The image from this camera shows the distance traveled while recording
  • Each LFET pod is mounted to a specially designed sled that can be pulled or pushed through the penstock by the Viper
  • Provides a scan width of 16” across the bottom of the penstock
  • With 300’ of cabling it is able to scan 250’ lengths while also being able to traverse inside diameter transitions

Example Waveform

Camera image of scaling where wall loss is occurring
Waveform showing 60% wall loss


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