Apparatus and method for providing a combined ultrasonic and eddy current inspection of a tube

摘要

An apparatus (1) and method for simultaneously inspecting tube walls with ultrasonic (11, 13, 15) and eddy current probes (17). The apparatus (1) includes a housing . assembly (6) containing a probe carrier (7) helically movable with respect to the housing (6), the probe carrier (7) having three ultrasonic probes (11, 13, 15) and an eddy current probe (17). The method includes correlation of the data generated by the ultrasonic probes (11, 13, 15) with the data generated by the eddy current probe (17) for determining the size, shape and nature of any flaws in the tube walls.