
AST Inspection: Best Practices in Non-Destructive Testing
In the realm of industrial infrastructure, the integrity of Above Ground Storage Tanks (ASTs) is a critical concern. Non-Destructive Testing (NDT) is a key methodology for safeguarding these assets against potential hazards and ensuring their long-term functionality. This discussion focuses on ASTs and explores the best practices in non-destructive inspection that are essential for maintaining their optimal functionality and safety. Best Practices in AST Inspection Thorough Visual Examination The first step in a comprehensive Above Ground Storage Tank inspection is a detailed visual examination. Trained inspectors meticulously check the tank’s exterior for signs of wear such as corrosion, uneven settlement, or visible anomalies like cracks or dents. This stage is vital for early detection of issues, enabling prompt intervention. Inspectors also assess the tank’s surroundings and support structures to ensure there are no environmental factors that could compromise its integrity. Ultrasonic Testing for Thickness Measurement Ultrasonic testing is pivotal in Above Ground Storage Tank inspection. This technique employs high-frequency sound waves to accurately measure the thickness of tank walls. Identifying areas where the wall may have thinned is crucial for preventing leaks or failures. This method is highly effective in pinpointing areas needing repair or closer monitoring, thus facilitating targeted maintenance efforts that help maintain the tank’s structural integrity. Magnetic Particle Testing for Surface Defects Magnetic particle testing is an integral part of the comprehensive evaluation of ASTs. This method is specifically designed to detect surface and near-surface defects, such as cracks or seam failures, particularly in ferromagnetic materials. The