A method of automated verifying a position of a sensor with respect to a steam generator of a nuclear power plant during an evaluation procedure performed with the use of the sensor on the steam generator in which a computer robotically moves the sensor through the plurality of tubes of the steam generator, the plurality of tubes comprising a plurality of Uniquely Identified Location tubes for each of which a historical signal is stored, the method comprising: detecting a signal from the sensor; making a determination that the sensor is situated at a UIL tube from among the plurality of UIL tubes; determining from a comparison of at least a portion of the signal from the sensor with at least a portion of the stored historical signal associated with said UIL tube whether the signal from the sensor is consistent with the stored historical signal associated with said UIL tube; wherein the at least a portion of the stored historical signal is representative of at least one of: at least one dent in the tube of the steam generator of the nuclear power plant, at least one instance of wear in the tube of the steam generator of the nuclear power plant, at least one instance of buffing in the tube of the steam generator of the nuclear power plant, and a pattern of expansion of the tube against a tube sheet of the steam generator of the nuclear power plant; and if the signal from the sensor is consistent with the stored historical signal associated with said UIL tube, concluding that the position of the sensor during the evaluation procedure is therefore correct and continuing with the evaluation procedure, otherwise generating an alert and ceasing the evaluation procedure. detecting a signal from the sensor; making a determination that the sensor is situated at a UIL tube from among the plurality of UIL tubes; determining from a comparison of at least a portion of the signal from the sensor with at least a portion of the stored historical signal associated with said UIL tube whether the signal from the sensor is consistent with the stored historical signal associated with said UIL tube; wherein the at least a portion of the stored historical signal is representative of at least one of: at least one dent in the tube of the steam generator of the nuclear power plant, at least one instance of wear in the tube of the steam generator of the nuclear power plant, at least one instance of buffing in the tube of the steam generator of the nuclear power plant, and a pattern of expansion of the tube against a tube sheet of the steam generator of the nuclear power plant; and at least one dent in the tube of the steam generator of the nuclear power plant, at least one instance of wear in the tube of the steam generator of the nuclear power plant, at least one instance of buffing in the tube of the steam generator of the nuclear power plant, and a pattern of expansion of the tube against a tube sheet of the steam generator of the nuclear power plant; and if the signal from the sensor is consistent with the stored historical signal associated with said UIL tube, concluding that the position of the sensor during the evaluation procedure is therefore correct and continuing with the evaluation procedure, otherwise generating an alert and ceasing the evaluation procedure.