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Remote-controllable tool for manipulating fuel rods arranged in nuclear reactor fuel assemblies in the spent fuel pit of nuclear reactors
Remote-controllable tool for manipulating fuel rods arranged in nuclear reactor fuel assemblies in the spent fuel pit of nuclear reactors
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机译：用于操纵布置在核反应堆乏燃料坑中的核反应堆燃料组件中的燃料棒的遥控工具
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摘要
Known fuel-rod changing tools are either designed so that they are only suitable for removal of single fuel rods, or individual tools are mounted with a specific spacing on a common drive means. This arrangement is only suitable for a single type of fuel assembly, and furthermore is restricted to a specific number of tools. A multiple tool for manipulating any number of fuel rods of a fuel assembly can be assembled from individual modular tools in a modular system, each individual tool consisting of a tension-compression rod (29) with a detachable fuel-rod grappler (30), that can be moved horizontally over the length of the fuel rod by means of a trolley (10). The trolley (10) in turn is mounted on bearings on a guide rod (3), and driven by an electric motor (1) by means of a lead screw (2). The guide rod (3), lead screw (2) and tension-compression rod (29) are fastened to a common holding device (4, 5, 6, 7), so that their central axes lie in parallel in a vertical plane, and form a basic module. This is provided with fasteners (50, 51, 52) for stacking and assembling into a multiple tool. Multiple changing tool for manipulating fuel rods in the spent fuel pit of pressurised-water or boiling-water reactors. IMAGE
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