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. During the operation and dismantling of nuclear facilities, individualpipelines must always be removed due to leaks because of the end of their maximum service life or the dismantling of the plant. In practice, this activity, which at first glance appears simple, is associated with many challenges due to limited space or the fact that the pipelines run through walls, despite various solutions that are available on the market. Therefore, the aim of the joint research project “RoTre” (Development of a novel universally inside pipe separator for dismantling contaminated pipelines) between KIT, Siempelkamp NIS Ingenieurgesellschaft mbH and RWE Nuclear GmbH is thedevelopment of an innovative and competitive inside pipeseparator for use in decommissioningand dismantling of nuclear facilities with a wide range of applications forvarious pipe diameters, wall strengths and materials (Fig. 1). An amendmentwill be the forward cleaning, whereby metal chips or other components can be captured continuously. Besides the dismantling in areas which are difficult to access, such as pipelines set in concrete or pipelines that cannot be drilled over their full length, dismantling should be possible in air and under water. After application, the system can be decontaminated. In order to separate pipes made out of different materials with various wall thicknesses, the development of a universally applicable test stand is planned in order to achieve the scientific work objectives. Among other things, it should be determined whether a sawing or an abrasive cutting process is more suitable for cutting inside pipes. Building on this, the parameters of the separation process aretested in a parameter study to achieve the smallest possible process forceswith a universal applicability. Relevant parameters are the geometryparameters of the cutting unit like the saw tooth shape, the composition ofthe cutting wheel, as well as the process parameters in the form of infeed,cutting speed and tool speed. The cutting quality achieved by the differenttools with the setting of the machine parameters is also an evaluationcriterion for the selection of the cutting process.

Explanations for the development of a novel universally inside pipe separator for dismantling (contaminated) pipelines