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Pulsed Eddy Current Inspection (PEC)

TechCorr introduces a revolutionary corrosion survey method, Pulsed Eddy Current Inspection (PEC), designed to assess the thickness of steel structures without surface contact. By employing electromagnetic waves, PEC penetrates insulation and concrete surfaces, magnetizing steel and accurately measuring wall thickness. Ideal for large piping or pressure vessels, PEC identifies hidden moisture and corrosion, mitigating risks without the need for insulation removal.
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Pulsed Eddy Current Testing (PECT) for Internal & External Corrosion Mapping

Pulsed Eddy Current Inspection (PEC) is an advanced non-destructive testing (NDT) technique used to measure the thickness of ferromagnetic materials, particularly steel, without the need for direct surface contact. This method is particularly advantageous for inspecting large sections of piping or pressure vessels where conventional NDT techniques, such as ultrasonics, may be limited due to the presence of insulation or coatings.
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Streamline Project Success with Comprehensive Reporting

All inspections and findings are meticulously documented in a comprehensive electronic report. This report includes summarized recommendations, calculations, API checklist items, CAD drawings, and high-quality photos, providing you with clear insights into the condition of your assets.

A Cornerstone of Tank Inspection

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Compared to traditional ultrasonic techniques, which require the removal of insulation and specialized probes for accurate measurements, PEC offers significant advantages in terms of efficiency and cost-effectiveness. By eliminating the need for insulation removal, PEC reduces downtime and associated labor costs, making it an ideal solution for routine inspections and maintenance programs.

In summary, Pulsed Eddy Current Inspection (PEC) is a powerful tool for detecting hidden corrosion and assessing the integrity of steel structures in a non-intrusive and cost-effective manner. With TechCorr's expertise in PEC inspection services, clients can confidently mitigate corrosion risks and prolong the lifespan of their assets without disruption to operations.

PEC operates by inducing an electric current into a transmitter coil, generating a pulsed magnetic field. This field penetrates through insulation or other surface coatings and interacts with the underlying steel structure. The induced eddy currents in the steel create secondary magnetic fields, which are detected by the receiver coil. By analyzing the amplitude and phase of the received signals, PEC accurately determines the thickness of the steel and identifies areas of corrosion or degradation.

Mathematically, PEC measurements are based on the principles of electromagnetic induction and the interaction between magnetic fields and conductive materials. The strength and distribution of the induced eddy currents are influenced by factors such as the thickness of the steel, the properties of the insulation or coating, and the presence of corrosion or defects.