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Evaluation parameters (EP), including evaluation scales (ES), for assessing a physical protection status of an INS (innovative nuclear system) in the INPRO have been developed; and a case study on the Republic of Korea’s (ROK) PWRs, using the developed EPs, has been performed. The INPRO proliferation resistance (PR) and physical protection (PP) methodology (developed by the IAEA) is comprised of a...
We have developed a method for detecting and diagnosing a disk wear failure and a foreign object failure among the various failure modes of check valves. The method is based on the acoustic emission sensors which can detect the sound wave of the leakage flow and the estimation of the power spectral densities with an auto-regressive model. For validating the method, we implemented a hydraulic test...
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