Pipeline Corrosion Under Support Inspection

Electromagnetic Acoustic Transducer or EMAT inspection is an advanced non-destructive testing method used throughout the oil and gas industry for the inspection of corrosion, metal loss and other anomalies in pipelines. EMAT produces ultrasonic waves in the inspection material via a magnet and coil, without the need for transducers or a liquid couplant making it extremely useful in severe high and low temperature environments such as boilers. Providing fast and reliable identification of corroded areas for further detailed inspection. EMAT sends sound waves axially around the pipe in both directions, while measuring the amplitude loss or change in time of flight to detect defects.

While Emat inspection technology is great at the detection of sites of corrosion and damage there are limitations in the identification and sizing of defects. The Dacon proprietary corrosion under support (CUS) inspection technology offers pinpointed anomaly inspection, identification, sizing, and pipe wall thickness measurement at support contact locations. While other technologies are available for detecting corrosion the Dacon CUS system is able to deliver (independently verified) accurate wall thickness measurements down to 0.3 mm. Pipeline support and bracket contact points are especially susceptible to increased corrosion due to welds and water pooling locations. CUS allows for inspection without the added expense, operation disruption and cost required to lift or move pipelines off supports.

Detectable Defect

Corrosion
Pitting
Wall loss
Remaining wall thickness

All inspection results are certified by internationally accredited inspectors and conform to POF 2016 specifications. Click here to contact a Dacon inspection expert.