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Pipeline Scanning | Ultrasonic
Weld Testing | TOFD | Engineering
Critical Assessment | AUT
Weld Equipment
Ultrasonic Weld Testing
Automated ultrasonic weld testing with AUT Technology removes barriers
UT Scan's automated ultrasonic weld testing system has enhanced the overall testing process for onshore and offshore pipeline inspection projects through the removal of barriers existing in most contemporary systems that are disconnected, ad hoc, inconsistent and complex to operate.
Automated Ultrasonic Testing (AUT) has become the industry standard for ultrasonic weld testing of pipe girth welds due to the advantages it has provided in terms of efficiency and speed, safety, sizing ability and defect detection and trending.
AUT is superior in its ability to size the through-thickness of flaws and is therefore compatible with an Engineering Critical Assessment (ECA) approach whereby the acceptance of welding flaws can be based on fitness-for-purpose.
AUT systems such as UT Scan also offer important cost-effectiveness advantages based on a reduction in the amount of unnecessary weld repairs. AUT is ideal for in-service inspection and therefore helps to avoid unnecessary shutdowns.
Incorporating AUT technology, the UT Scan system is designed to scan the entire weld in one circumferential scan. To do this, the wall thickness is divided into zones and a probe technique is selected to inspect each zone as a minimum. Pulse, echo & pitch, and catch techniques are used to target the weld preparation as perpendicularly as possible.
The thorough transmission technique is used to verify proper acoustic coupling of the probes to the pipe surface and for the detection of transverse indications. The TOFD technique is used as a safety net to detect indications with unaccepted orientations and to assist the operator in sizing and defect locations.
UT Scan’s data computers are paired with unique software called “PlusWeld” which automatically collects all AUT process parameters and weld testing results at the conclusion of the pipeline weld inspection.
PlusWeld automatically interprets and audits the weld
testing results. It offers the operator and our clients and consultants
a real-time view of the welding progress, defects and a defect trending,
on an “as is”, daily or project basis. The results are broken
down by the welds, welder, defect types or a particular zone of the weld
of interest. This will give you quality reporting information on your
entire project in real time.