Automated Ultrasonic Testing (AUT) gives a map of the corrosion that has occurred on a pipeline. It uses ultrasound and scanners to locate and record the characteristics of the damage that has occurred.

Advantages

  • AUT is superior in that is can test a vessel while it’s in operation and can be used in temperatures of up to 700oF.
  • High penetrating power and sensitivity.
  • Very quick with 100% coverage over large areas.
  • Automatic deployment mechanism improves test results due to consistent pressure on transducer, with steady motion and uniform coverage.

Disadvantages

  • Advanced technician knowledge required.
  • Surface must be prepared by cleaning and removal of loose scale prior to inspection.
  • Couplant required to provide transfer of ultrasonic wave energy.
  • Rough, irregular parts are hard to inspect.

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