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Innovative technologies for spent fuel safe management at Ignalina channel-type reactors
Egidijus Babilas,Pavel Dokucajev,Darius Janulevicius,Aleksej Markelov,Raimondas Pabarcius,Sigitas Rimkevicius,Eugenijus Uspuras,Mindaugas Vaisnoras 한국원자력학회 2018 Nuclear Engineering and Technology Vol.50 No.3
In Lithuania, all spent nuclear fuel (SNF) resulted from the operation of the Ignalina Nuclear Power Plant(INPP), which had two Russian Acronym for “Channelized Large Power Reactor”-type reactors. After thefinal shutdown, the total amount of SNF at the INPP was approximately 22,000 fuel assemblies. All theseassemblies will be stored for about 50 years and disposed of after that. The decision to shut down anddecommission both reactors in Lithuania before termination of design period raises a significant challengefor the treatment of accumulated SNF. Therefore, various techniques and technologies for SNFmanagement were developed and justified for that specific case, and a set of special equipment wasinstalled at the INPP, the effectiveness of which was demonstrated during its operation. This articlepresents unique techniques related to the management of SNF adopted and commissioned at the INPPafter its operation shutdown, namely fuel rod cladding leak tightness control system and specialequipment for collection of possible spillage during handling of SNF assembly in the hot cell. Theoperational experience and measurement results of fuel rod cladding leak tightness control system arepresented.
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