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In the framework of the decommissioning of the nuclear power plant KRB A at Gundremmingen, a study for the dismantling of the reactor pressure vessel (RPV) and the internals was executed. A survey of the available literature shows the state of the art in dismantling of nuclear facilities. Most of the published reports are limited to the presentation of cutting techniques. Other techniques essential for a RPV dismantling, such as handling, observation and controlling are not adequately described. After calculating the specific circumstances for the pressurised water reactor KRB A, different feasibility studies for the dismantling of the RPV and the internals were executed by several industrial partners and a university. Each study describes the complete procedure for dismantling. The studies are focused on the application of different segmenting techniques using appropriate tools. The results of these dismantling concepts will help to determine appropriate dismantling procedures of the RPV and its internals. The internals of the RPV should be removed and segmented under water by using thermal cutting techniques and with support of an electric master slave manipulator (EMSM) and simple tool guiding systems. It was recommended that a mechanical dismantling station should be installed in the fuel storage pool for a further post-segmenting of the removed components. The RPV itself should be segmented by a mechanical method. The decision whether this work should be executed in air or under water is not finally taken.

Additional information

Authors: STANG W, Kernkraftwerke Gundremmingen Betriebsgesellschaft mbH (DE);ETTEMEYER A, Kernkraftwerke Gundremmingen Betriebsgesellschaft mbH (DE)
Bibliographic Reference: EUR 15985 DE (1995) 38 pp., FS, ECU 7
Availability: (2)
ISBN: ISBN 92-827-4318-7
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