Automated Ultrasonic Testing (AUT) was developed for the fast and reliable inspection of girth welds during the construction of long-distance pipelines, both on and offshore. The system is characterized by high inspection speed and instantaneous recording of results.
Unlike radiography, it provides immediate feedback on weld conditions. The capability of AUT to characterize and size flaws enables the application of Engineering Critical Assessment-based acceptance criteria for weld imperfections.
AUT uses mechanized scanners that are computer controlled to move the transducers over the surface of the material being inspected. As the transducer moves, the computerized system acquires ultrasonic inspection data on a predefined grid, often acquiring data from a number of different transducers at one time.
The data is then displayed within the computerized interface, allowing the operator to manipulate it to provide the data displays that shows the areas of interest within the inspection volume. AUT can utilize any ultrasonic transducers or any combination of these. AUT can be used for newly fabricated welds in lieu of radiography, and also for in-service inspection to detect and trend flaws.
Automated UT (AUT) gives pipeline construction projects many Advantages including;
1) High-Speed Inspection (as motorized) & immediate weld scan result 2) As this method is acceptable in lieu of RT by all International Codes, no safety issues with radiation exposures 3) No interruption to other workers 4) More accurate inspection results 5) Reduction of overall project cost 6) All inspection results are electronic, reducing the cost of radiography films
We perform Automated Visual Inspection with one of the most advanced machines in the world called Weldstar Hybrid AUT Girt Weld Inspection.