Dismantlement Steps

Steps 1-5

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 These include: development of Design and Organizational Documentation and Program Management Framework; production of Non-Standard Equipment
(special containers for handling liquid radioactive wastes, solid radioactive wastes, hazard materials; and storage of solid radioactive wastes); towing of the submarine to "Zvezdochka" Shipyard from its naval base; preparation of the submarine for de-fuelling: placing special equipments on the submarine to provide a containment barrier once access is cut into the pressure hull to expose the reactor vessels. 


Step 6

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De-fuelling: the reactor vessel is drained of its moderator and breached to expose the fuel assemblies, fuel assemblies in each reactor are individually lifted out of the reactor in a special transfer container, containers are transferred into Onshore De-fuelling Facility, and fuel assemblies are lowered into a shrouding assembly. Containers are transferred to Spent Nuclear Fuel Cask storage site for temporary storage.


Step 7

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Docking the Submarine. The submarine is moved from the De-fuelling Facility to a dry dock. Once dry and on the blocks in the dry dock scaffolding is arranged to allow workers to begin cutting.

 

 


Step 8

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Dismantling the submarine The submarine is cut into three sections followed by the systematic dismantling of the front and rear sections. Salvageable metals, materials and internal fittings of value are removed as the sections are sequentially dismantled. Electrical cable is processed into copper, steel and rubber pellets in a special facility. Precious metals and electrical components are separately sorted and salvaged.

 


Steps 9-10

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Forming of the Three-Compartment Unit. Because of the high levels of radioactivity in the reactor section the reactor section cannot be dismantled until the radiation has decayed to safe levels (70-100 years). In order to move and store the reactor to the German built Sayda Bay storage site a three-compartment unit is formed consisting of the reactor section and a proportion of the adjacent compartments cleared of all heavy equipment.


Steps 11-12

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Preparation of salvageable materials and management of non-salvageable and hazardous materials. These tasks run in parallel to Steps 8, 9 and 10. Work in this package relates to cutting sorting and salvaging recoverable materials from the submarine and all activities required to remove, handle and process non-radioactive but hazardous or non-salvageable materials

 


Step 13

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Radioactive Waste and Spent Fuel Management. This task is executed after Step 6 and is run parallel to dismantling activities. The work relates to the handling and processing of liquid and solid radioactive wastes in addition to the temporary storage of SNF within the shipyard and its transportation to Mayak Production Complex for processing.