H. M. Hashemian

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iii Executive Summary Safe, efficient, and economic operation of nuclear systems (nuclear power plants, fuel fabrication and storage, used fuel processing, etc.) relies on accurate and reliable measurements. Newer types of sensors, and sensors to monitor non-traditional parameters, are expected in next-generation nuclear power plant (NPP) and fuel-cycle(More)
Currently in the United States, periodic sensor recalibration is required for all safety-related sensors, typically occurring at every refueling outage, and it has emerged as a critical path item for shortening outage duration in some plants. Online monitoring can be employed to identify those sensors that require calibration, allowing for calibration of(More)
Typically, the calibration of an instrument such as a pressure transmitter involves two steps as follows: Determine if calibration is needed. This step is performed by providing the instrument with a series of known inputs covering the operating range of the instrument. The output of the instrument is recorded for each input and compared with the acceptance(More)
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