Advanced ultrasonic inspection system for the ID-inspection of reactor pressure vessels of BWRs
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A newly-developed, modular ultrasonic examination system has been developed by Siemens for the ID inspection of BWR RPV`S. It is based on the phased-array technique with hybrid probes using the latest in manipulator and control equipment technology to allow the often hard-to-access weld areas of older reactor pressure vessels in US BWR plants to be examined within a very short time and with minimal radiation exposure of the examination personnel. New NRC stipulations requiring almost complete ultrasonic examination of all RPV welds can be fully satisfied using this system for the ID inspection of all longitudinal and circumferential welds above the jet pump baffle plate.