Underwater Pulsed Eddy Current (PEC) Probes

Pulsed Eddy
Current (PEC)

Underwater PEC probes are specifically designed to detect corrosion hidden under marine growth or coatings, without surface preparation, in offshore applications such as risers, jetty piles, caissons, underwater piping systems, and conductor inspections.

Underwater probes can tackle deeper offshore applications. They are watertight down to 100 m (330 ft), can be used, through a long extension cable, with Lyft® in grid-mapping mode. The status LEDs embedded in the probes ensure better control and synchronisation with the topside inspection team. The probes can scan metals as thick as 100 mm (4 in), as well as insulation and marine growth as thick as 300 mm (12 in).


  • Small
  • Medium
  • Large

Supported wall thicknesses

  • Small: up to 19 mm (0.75 in)
  • Medium: up to 75 mm (3 in)
  • Large: Up to 100 mm (4 in)

Supported insulation/coating thicknesses

  • Small: 0–76 mm (0–3 in)
  • Medium: 0–200 mm (0–8 in)
  • Large: 0–300 mm (0–12 in)

Footprint at zero liftoff

  • Small: 35 mm (1.38 in)
  • Medium: 62 mm (2.4 in)
  • Large: 100 mm (3.9 in)


None (add-on only)

Maximum watertightness

100 m (330 ft)


50 m (165 ft)

100 m (330 ft)

Maximum surface temperature

Direct contact operation: 70 °C (158 °F)