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Information × Registration Number 0224U002214, 0121U109339 , R & D reports Title Complex analysis of potential scenarios for the Shelter object transformation into an ecologically safe system after the commissioning of the NSC popup.stage_title Head Nosovskyi Anatolii V., Доктор технічних наук Registration Date 08-02-2024 Organization Institute for Safety Problems of Nuclear Power Plants of the National Academy of Sciences of Ukraine popup.description2 The purpose of the work is a comprehensive analysis of potential scenarios for the Shelter object transformation into an ecologically safe system after the New Safe Confinement (NSC) commissioning, on the basis of which a realistic strategy for the phased removal/transfer to a controlled state of fuel-containing materials (FCM), their further handling and associated radioactive waste, as well as the Shelter object transformation in the process of its transformation into an ecologically safe system and determination of its final state. Research methods are systematic analysis of factors; modeling of technological processes; expert assessment; multi-criteria optimization; factor modeling; mathematical modeling. The most important results are: A method of comparative analysis of scenarios of step-by-step extraction of FCM is proposed. According to its results, it was established that with proper financing of the phased removal of FCM, the priority is the scenario that provides for the removal of most accumulations of FCM during the life cycle of the NSC (except for FCM localized in man-made soil under the NSC facilities and in the space behind pioneer wall). When implementing such a scenario, the infrastructure of the NSC is maximally used, the costs of creating protective barriers for the containment and isolation of FCM, as well as the costs of creating additional infrastructure for the extraction and further handling of FCM and other radioactive waste are reduced. Fundamental technological solutions for the removal of existing FCM accumulations and associated radioactive waste are proposed. For individual FCM accumulations, technological solutions have been developed both taking into account the presence of the NSC and its systems, and in the case when it will be decommissioned. An improved system of accounting and control of nuclear materials, taking into account their modern physical state, is proposed. Product Description popup.authors Paskevych Serhii A. Rudko Volodymyr M. popup.nrat_date 2024-02-08 Close