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 700^oF.
• 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.