Solid Radioactive Waste Strategy Report.pdf - UK EPR

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EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 188 / 257 The ISF will provide the following functional areas: · Reception and shipping area; · Storage compartment loading/ unloading area; · Covered ILW concrete storage compartments; · Crane maintenance; · Control room; · Monitoring area; · Auxiliary areas and rooms (e.g. crane maintenance, electrical, HVAC, controlled entrance area); · Extension to accommodate decommissioning wastes; · Potential for extension to accommodate further packaging/conditioning/monitoring facilities if required. 12.2.1 Main Systems And Facilities 12.2.1.1 Reception And Shipping Area The on-site transport of the waste packages will be carried out using a shielded transport vehicle, if required. The reception and shipping area will be designed to receive both shielded and unshielded waste packages from the WTB. The ISF crane will be able to access the receipt and dispatch area via a hatch for loading/unloading the packages from and to a truck. Handling of the waste packages inside the storage area will be performed remotely. 12.2.1.2 Shielded Transport Container Loading/Unloading Section The shielded container will be transferred from the transport vehicle by crane to the shielded container loading and unloading section, which will be located adjacent to the concrete storage compartments. Prior to removal of the drums and containers from the shielded transport container the lid will be removed from the shielded container and laid down. 12.2.1.3 Storage Compartment Loading And Unloading Area The storage compartment loading and unloading area is located directly above the concrete storage compartments. This area will be supplied with an overhead crane that permits access to the individual concrete storage compartments. The storage compartment loading/unloading area extends above the receipt/dispatch area and all other auxiliary supporting areas/rooms.
EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 189 / 257 12.2.1.4 Covered ILW Storage Concrete Compartments The storage area is divided into individual compartments. These divisions allow the flexibility to segregate the waste packages according to their properties, content, decay characteristics, etc. as required. All compartments will normally remain closed with concrete slabs (an example of insertion openings is shown in Figure 74). However, the compartment that is currently used for loading or reloading is covered with an iron frame slab. Within this slab is an iron frame including access holes that permit the use of the compartment for emplacement and retrieval of drums and boxes. The slab thickness reduces the dose in the loading/unloading area above permitting unrestricted, direct human access. The preliminary design of these compartments allows stacking of the following (for example): 500 litre NDA drums in 4 layers, 3 m³ NDA Boxes in 3 layers, 200 litre drums in up to 6 layers or cast iron containers in up to 4 layers, or 4m boxes. Other waste package geometries can also be accommodated if required. FIGURE 69: 500 LITRE DRUMS FIGURE 70: 3M 3 BOX – CORNER LIFTING VARIANT
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