Advanced Holiday Detector for Microcrack Identification in Silicate-Enamel-Coated Pipes

Abstract

Cracks represent a significant challenge to the structural integrity of piping systems. Therefore, this study is devoted to the detection of macro-micro cracks in pipes with silicate-enamel coatings, which are commonly used to enhance corrosion resistance. While the process of detecting macro cracks on the surface of the coating is currently underway, the identification of macro-micro cracks remains a significant challenge. The article highlights the significance of their timely detection to prevent potential leakage and design failures, underscoring the implications for economic advancement and security. An algorithm for detecting microcracks on the surface of the pipes with silicate-enamel coatings was developed. The test voltage of the enhanced holiday detector was increased to 40 kV, which allowed the microcracks as small as 1.5 mm long to be detected. A methodology for the remote detection of oil leaks from oil trunk pipelines was presented. Following the testing process, the coordinates and geometric parameters of the cracks were determined.