Cleaning heat exchanger tubes using abrasive blasting is a critical step in preparing them for non-destructive testing (NDT). Over time, heat exchangers accumulate deposits such as scale, corrosion, and other contaminants that can significantly affect the accuracy of NDT methods like ultrasonic or eddy current testing. Abrasive blasting, which involves propelling a stream of abrasive material  under high pressure, effectively removes these deposits, restoring the surface of the tubes and ensuring optimal test results. Importantly, this method does not harm the wall integrity of the tubes. The process is designed to remove surface contaminants while preserving the structural soundness of the tube walls, making it an ideal choice for sensitive equipment that requires a thorough cleaning without causing damage.

This method is especially beneficial in environments where heat exchangers are subjected to harsh conditions, such as in the oil and gas, power generation, and chemical industries. The cleanliness achieved by abrasive blasting enhances the sensitivity and accuracy of NDT techniques, allowing inspectors to identify even minor issues early, before they develop into more significant problems. Furthermore, by removing contaminants without compromising the integrity of the tube material, abrasive blasting extends the service life of heat exchangers and improves overall operational efficiency. Clean tubes ensure better heat transfer and help prevent unplanned shutdowns due to equipment failure, ultimately contributing to more reliable and cost-effective operations.