Phased Array Ultrasonic Testing (PAUT) utilizes multiple shear (transverse) waves fired from a single transducer housing to create an array of angles, which are projected into a color scale image, allowing for a visual representation of indications found within a specimen.

Phased Array device


  • ASME B31.1/31.3 piping construction projects
  • Used in conjunction with Time of Flight Diffraction (TOFD) for ASME Sec. VIII Div. 2 pressure vessel construction projects
  • API Storage Tank construction projects
  • Pre-turnaround and turnaround in-service inspection

Multi-Skip Phased Array Testing

Multi-Skip Phased Array Testing is a full volumetric screening examination for the detection of both corrosion and pitting with the ability to fire multiple angles and skips, which allows for a full volumetric screening under corrosion deposits, supports, or tank annular rings.


  • In-service inspection of the critical zone from the tank exterior
  • Measuring corrosion under the shell to floor weld on a tank from the tank chime
  • Detecting and measuring corrosion under pipe and tank supports, repads, and blisters
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