Abstract
Many of equipments in the hot cell need to be replaced periodically. Since piping connects these equipments, related pipes also have to be replaced when the relative position between equipments changes by replacement of equipment. To replace pipes, the relative position of connecting parts must be measured with sufficient accuracy because the related pipes cannot be adjusted on-site.
Conventionally, the object coordinates of connecting parts have been mechanically measured using a special device, which is larger than the jumper pipes. This method, however, had such problems as generating large amount of waste, possible radiation exposure of the personnel, time consumption for measurement work, and degraded measurement accuracy. To solve them, a telemetry system using any non-contacting measurement technique is required. This paper discusses the development of a three-dimensional measurement method based on vision metrology for remote replacement of equipment and a manufacturing process of the related pipes.
