Automated Pipeline Inspection (AUT)
Mechanized or Automated Ultrasonic Testing of pipeline girth welds is now in common use in the on – and... View more
Mechanized or Automated Ultrasonic Testing of pipeline girth welds is now in common use in the on – and offshore industry. Automated ultrasonic testing (AUT) is globally seen as more than just an alternative to the standard radiographic inspection technique not only because it does not poses safety hazards but also because it is faster, more reliable and has better detection capabilities of critical Lack of Fusion defects in pipeline girth welds. One of the reasons to use the AUT technique is due to its possibility to use acceptance criteria which are based upon ECA (Engineering Critical Assessment) instead of the so-called “Good Workmanship”. Usually the AUT systems are mounted on a band strapped around the pipe. From the weld, ultrasonic data is collected from which the defect sizes and positions can be determined by experienced operators using dedicated software algorithms.
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