Abstract: In a system and method of eddy current testing, all analog portions of an eddy current tester are generated in a probe assembly that includes a coil module and a tester module, wherein the probe assembly is inserted into a tube under inspection. The tester module supplies to the coil module analog signals that induce eddy currents in the tube under inspection and receives from the coil module analog signals produced in response to the induced eddy currents. The tester module converts the received analog signals into digital data corresponding to the induced eddy currents. Digital data, control signals, and power and ground are sent over a cable that runs between the tester module and an interface module. The cable does not carry analog signals. The data can be converted into eddy current data that can be displayed on a display.

Abstract: In a system and method of working tubes coupled to a tubesheet having a number of holes, wherein each hole in fluid communication with one of the tubes, an end-effector is positioned by a robot in coarse or rough alignment with a first hole in the tubesheet. Via lasers positioned on the end-effector, laser spots are formed on a surface of the tubesheet adjacent the first hole. The laser spots are detected by a camera and the alignment of the end-effector relative to the first hole in the tubesheet is refined via the robot based on the detected pattern of laser spots. The tool is then moved into the tube that is in fluid communication with the first hole in the tubesheet to work on (inspect, plug, sleeve or weld) the tube.

Abstract: In a system and method of working tubes coupled to a tubesheet having a number of holes, wherein each hole in fluid communication with one of the tubes, an end-effector is positioned by a robot in coarse or rough alignment with a first hole in the tubesheet. Via lasers positioned on the end-effector, laser spots are formed on a surface of the tubesheet adjacent the first hole. The laser spots are detected by a camera and the alignment of the end-effector relative to the first hole in the tubesheet is refined via the robot based on the detected pattern of laser spots. The tool is then moved into the tube that is in fluid communication with the first hole in the tubesheet to work on (inspect, plug, sleeve or weld) the tube.