Abstract
This paper reports experiences of preservice inspections using advanced Inservice Inspection (ISI) systems. The advanced ISI system consists of newly designed automated scanners, a high speed data acquisition/analysis station and automated pipe inspection system. This system has been developed to reduce examination time and radiation dose. The automated scanners are designed light weight and easy handling. A semi-automated inspection system has been used for pipe inspection. It is successful for taking reliable examination data, but not successful to reduce the radiation dose of personnel. For this reason, the automated pipe inspection system has been developed to replace the semi-automated system. The automated pipe inspection system consists of a small scanner, scanner controller and high speed personal computer for data acquisition. The data is analyzed by the data analysis station. The scanner has a light weight body in order to ease handling, and it requires almost the same clearance with manual examination. The PSI were successfully completed in a shorten time period. From this experience, the advanced ISI system will be very useful for ISI, especially reduction of radiation dose of personnel in future.
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