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Holiday Testing

Holiday testing, also known as spark testing or pinhole detection, is a critical method used to identify defects such as pinholes and voids in protective coatings applied to substrates. This non-destructive testing technique involves passing an electric current through the coating surface and detecting any electrical shorts caused by breaches or discontinuities in the coating.

The process typically utilizes a low-voltage, high-amperage DC current source along with a wet sponge electrode or probe. As the electrode is moved across the coated surface, any breaches in the coating will allow the electrical current to flow, resulting in visible sparks or audible signals. These indications help pinpoint the location and severity of defects, enabling timely repairs to maintain the integrity of the protective coating system.

Holiday testing is widely employed in industries such as oil and gas, marine, infrastructure, and manufacturing, where the integrity of protective coatings is essential for corrosion prevention and asset longevity. Our experienced technicians utilize state-of-the-art holiday testing equipment and techniques to ensure thorough and accurate defect detection, helping you safeguard your assets and infrastructure against corrosion-related damage.
For comprehensive holiday testing services tailored to your specific needs, contact us today. Our team of experts is ready to assist you in ensuring the integrity and longevity of your coating systems through reliable defect detection and mitigation.
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