Corrosion is the degradation of metal usually resulting from interaction with the environment around it. Over time, corrosion will gradually reduce the original wall thickness reducing the strength. In the oil & gas industry, corrosion can lead to failures, expensive repairs, unscheduled shutdowns, and reduced efficiency costing billions of dollars. With external structures, the outside surfaces are often accessible and easily protected, so most corrosion cannot be seen and occurs from the inside of closed structures like tanks and pipelines. This can have dangerous results.
The standard approach for inspection is to measure remaining wall thickness using thickness gauging but there is a growing requirement for corrosion mapping using portable systems with semi or fully automated scanners. This allows for more complete coverage and better sizing, therefore improving the overall monitoring process and ensuring continued safe operations.
Corrosion inspection is usually done with dual-element transducers. With the correct gauge, measurements can also be made through a coating or paint.
NDT Systems offers a range of dual-element hand-held thickness gauges for point measurements with the option for encoded B-scan imaging using a hand-held scanner. For area corrosion mapping on pipes or vessels, we offer the uniquely portable and battery operated Corrosion Inspection System for covering large areas with C-scan results.
The Corrosion Inspection Package is the most cost-effective corrosion mapping on the market and includes the Raptor imaging flaw detector, a hand-scanner for a unique fast survey mode, and an automatic precision X-Y scanner.
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