Abstract: Embodiments of the disclosure can relate to predicting valve performance in power plants. In one embodiment, a method for predicting valve performance in power plants can include receiving at least one signal from a valve associated with a power plant. The method may further include receiving operational data from one or more power plants. The method may further include determining a confidence value associated with operation of the valve, based at least in part on the at least one signal from the valve and the operational data from one or more power plants. The method can further include comparing the confidence value to a threshold level, and comparing a time during which the confidence value persists to a threshold duration. When the confidence value exceeds the threshold level, and when the time exceeds the threshold duration, the method may include generating an alert for a probability of misoperation of the valve.

Abstract: In one embodiment, a system includes an imaging system configured to capture a first image of a rotating component within an interior of a turbine using a first integration time, to capture a second image of the rotating component within the interior of the turbine using a second integration time, different than the first integration time, and to subtract the first image from the second image to obtain a differential image.

Abstract: A system for monitoring a weld operation is provided. The system includes an ultrasonic wave generator adapted to deliver an ultrasonic wave to a target material during the weld operation and an ultrasonic receiver adapted to receive the ultrasonic wave propagated through the target material. The system also includes a signal processor adapted to determine a quality level of a weld created during the weld operation by extracting data corresponding to a torsional mode from the ultrasonic wave and comparing the data to a profile that corresponds to an acceptable quality level.

Abstract: In one embodiment, a system includes a turbine comprising multiple components in fluid communication with a working fluid. The system also includes an imaging system in optical communication with at least one component. The imaging system is configured to receive a two-dimensional image of the at least one component during operation of the turbine, and to map the two-dimensional image onto a three-dimensional model of the at least one component to establish a composite model.

Abstract: A system for monitoring a weld operation is provided. The system includes an ultrasonic wave generator adapted to deliver an ultrasonic wave to a target material during the weld operation and an ultrasonic receiver adapted to receive the ultrasonic wave propagated through the target material. The system also includes a signal processor adapted to determine a quality level of a weld created during the weld operation by extracting data corresponding to a torsional mode from the ultrasonic wave and comparing the data to a profile that corresponds to an acceptable quality level.