Comparative study of heat exchanger tubes failure analysis using ECT and IRIS

This article describes the comparative study of selected advanced tubing inspection nondestructive testing (NDT) methods of eddy current testing(ECT) & internal rotating inspection system (IRIS)for heat Exchanger equipment in the petrochemical industry. In this research tube material was SB 163 800 H (UNS 8810) and tubesheet material SB 564 800H (N08810). By utilizing two advanced tubing inspection methods of reporting, we can make adjustments to the process and extend the life of the heat exchanger by plugging tubes or retubing individual tubes or partial retubing or full retubing. The following data compares the suitability of ECT and IRIS for inspecting heat exchanger tubes. The capabilities of the considered NDT methods for tube inspections are presented in the study. Because of their high detectability and quick examination, nonferromagnetic materials like inconel should be tested by ECT. IRIS is ineffective on non-ferromagnetic materials like inconel based on experimentation and testing.