Dry processes, including disassembly, mechanical decladding, vol-oxidation, blending, compaction, reduction, and sintering, shall be performed in advance as the head-end process of pyroprocessing. With such a background, KAERI is developing a dry head-end process for pyroprocessing. With the increase in the cumulative amount of spent fuel in Korea, the development of methods for reliable and effective management of this spent fuel has become an important KAERI (Korea Atomic Energy Research Institute) mission. However, it could be a valuable asset if it is effectively recycled. Spent fuel, which is an essential by-product of electricity generation by nuclear power reactors, is highly radioactive. The practical-scale dry disassembling technology can be tested using scale-up data for reuse of the spent fuel. During the basic test performed in this study, a simulated assembly was completely disassembled using new methods, such as dismantling, extraction, and cutting processes.
In addition, in the present study, we did not consider the heat generated from minor actinides or the radioactivity of the fission product these aspects will be considered in a future study. However, the authors used simulated fuel, instead of the actual spent fuel, owing to a lack of joint determination.
#Pneumatic aircylinder assembly for solidworks 2005 verification#
With this in mind, design considerations were analyzed based on remoteness, and basic verification tests were performed. The purpose of dry head-end disassembly process is to test the main device performance and to obtain scale-up data for practical-scale disassembling. The down-ender, dismantling, extraction, and cutting technologies are analyzed and models have been designed for testing. This study describes the main design considerations for the disassembling process of the spent nuclear fuel assembly during the dry head-end process. Dry head-end disassembling process has advantages over the wet head-end process because of the lower risk of proliferation and treatment of spent fuel with relatively high heat and radioactivity. We have developed a practical-scale dry disassembling process to dismantle PWR (Pressurized Water Reactor) spent nuclear fuel assembly in the order of several tens of kilograms of heavy metal/batch to supply rod-cuts (cladding tube and UO 2 pellets) for mechanical decladding process.
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