Solid Radioactive Waste Strategy Report.pdf - UK EPR

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EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 234 / 257 d) Transport container preparation In the transport container preparation room, before movement of the transport container to unloading area, the following operations are performed by operations staff standing on a shielded platform: · Monitoring of the atmosphere between the inner and outer lids to confirm that the transport container inner lid remains tight; · Removal of the outer lid; · Monitoring of the transport container inner atmosphere (krypton detection), to confirm that no fuel has been leaking during the transport. In case of krypton detection a specific procedure will be carried out; · Unscrewing of the inner lid; · Fixing of a docking adapter onto the inner lid; e) Transport container return The operations described above are performed in approximately reverse order when preparing fuel assemblies for export from the interim storage facility. Fuel assemblies unloading and placing into canisters This part of the facility removes the fuel assemblies from the transport containers and places them into the fuel storage canisters. The fuel assemblies are sealed in air-tight storage canisters which are then moved to the storage vault. a) New canister introduction An empty canister is introduced into the fuel assemblies transfer tunnel using a handling crane operated from the handling hall. b) Transport container inner lid opening This operation is remotely controlled. After preparation of the transport container, it is transferred to the docking station and docked to the fuel assemblies unloading cell. The transport container docking system ensures that the connection between the transport container internal cavity and the fuel unloading cell is sealed to avoid the spread of contamination. The transport container inner lid is removed by means of the in-cell jib crane.
EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 235 / 257 FIGURE 97: TRANSPORT CONTAINER DOCKED TO DRY UNLOADING CELL c) Fuel assemblies unloading from the transport container Fuel assemblies are unloaded by means of the in-cell handling crane, fitted with a specific gripper adapted to the fuel assemblies to be handled. The fuel assemblies are transferred to an adapted fuel assembly canister. Once the spent fuel assemblies have been unloaded a camera mounted on the crane is used to confirm that the transport container is empty and the transport container is closed.
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A 2008-11-26 Sarah Greenwood Gary C
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Solid Radioactive Waste Strategy Report.pdf - UK EPR

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