Abstract: A method for inspection of tubes in a boiler is disclosed. The method of inspecting includes the steps of providing an apparatus having a sensor and a housing adapted to contain the sensor. The method further including the steps of extending the apparatus into a tube bundle until a desired tube for inspection is reached; rotating the apparatus until the sensor is positioned over the tube to be inspected; clamping the housing around the tube to be inspected, thereby clamping the sensor around the tube; transmitting a pulse of guided waves into the tube to be inspected and detecting reflected signals; and acquiring data from the reflected signals and determining the condition of the tube.

Abstract: A method for inspection of tubes in a boiler is disclosed. The method of inspecting includes the steps of providing an apparatus having a sensor and a housing adapted to contain the sensor. The method further including the steps of extending the apparatus into a tube bundle until a desired tube for inspection is reached; rotating the apparatus until the sensor is positioned over the tube to be inspected; clamping the housing around the tube to be inspected, thereby clamping the sensor around the tube; transmitting a pulse of guided waves into the tube to be inspected and detecting reflected signals; and acquiring data from the reflected signals and determining the condition of the tube.

Abstract: An apparatus and method for inspection of tubes in a boiler is disclosed. The apparatus includes a sensor adapted to generate and detect guided-waves and a mechanical device adapted to reach into a tube bundle and clamp the sensor onto an interior tube selected for inspection. The mechanical device includes a housing adapted to contain the sensor and an air cylinder adapted to actuate the housing to allow the housing to clamp onto the interior tube.