Publication Laka-library:
Radioactive Graphite Handling in Decommissioning of RBMK-Reactors (2019)
| Author | O.Bodrov, V.Kuznetsov, O.Muratov, A.Talevlin |
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6-01-3-40-26.pdf |
| Date | 2019 |
| Classification | 6.01.3.40/26 (NUCLEAR SAFETY - REACTORS - VVER/RBMK GENERAL) |
| Front |
From the publication:
RADIOACTIVE GRAPHITE HANDLING IN DECOMMISSIONING OF RBMK-TYPE REACTORS Current challenges and possible solutions for radioactive graphite handling in decommissioning of RBMK-type reactors Oleg Bodrov, Vladimir Kuznetsov, Oleg Muratov, Andrey Talevlin Saint-Petersburg – Chelyabinsk – Visaginas 2019 Abstract The report presents the history of graphite-moderated nuclear reactors, volumes of accumulated radiation- exposed graphite, and the process of handling graphite as radioactive waste containing radioactive carbon 14С. Analysis of environmental and biological significance of stable and radioactive carbon isotopes was conducted; natural and man-generated mechanisms of radioactive carbon 14С formation were described, as well as the way of 14С migration and its impact on live organisms, populations and ecosystems in general. There is a detailed analysis of specifics of graphite- moderated reactors’ decommissioning with due consideration of accidents when technological channels were damaged and graphite cladding was contaminated with trans-uranium elements. An emphasis is made on the regulatory analysis of handling radioactive graphite, with assessment of possible strategies and concepts of handling graphite from uranium- graphite reactors during the decommissioning process. The report contains recommendations for possible solutions of a range of issues pertaining to safe decommissioning of graphite-moderated reactors, handling of reactor graphite for ensuring its long-term isolation from living environment, and taking into account interests of all stakeholders. The analytical report has been prepared by experts from Russia and Lithuania who worked for many years in the sphere of decommissioning of nuclear power plants and handling of spent nuclear fuel and radioactive waste. Preparation of the report was initiated and organized by the Public Council of the South Coast of the Gulf of Finland under LLC Decommission. This work was supported by the Norwegian NGO Naturvernforbundet- Friends of the Earth Norwayas part of the project “From closed rooms to openness”.