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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 occuring
Waveform showing 60% wall loss

Report Excerpts


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