Solid Radioactive Waste Strategy Report.pdf - UK EPR

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EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 186 / 257 12 ILW INTERIM STORAGE FACILITIES 12.1 Introduction ILW generated by the operation of the EPR will be stored in an Interim Storage Facility (ISF). The ISF is located separately from the WTB and will continue to provide interim storage for ILW following delicensing and return of the site to an agreed end state with the regulators and local planning authority. The ISF will be used to store operational ILW that has accumulated during the 60 years of plant operation and can be adapted to store any additional ILW that is generated during decommissioning of the plant after final shut down. The expected lifespan of the facility is 100 years. As such the site selected for the construction of the EPR and the building design itself will permit the expansion of the building for storing decommissioning wastes as they are generated. The facilities will be designed to handle the different waste packaging geometries that will be stored in the ISF. The ILW will be stored in fully covered, concrete storage compartments that provide individual storage volumes. The fully concrete storage compartments permit operator access, loading and unloading, visual inspection and ventilation of the concrete storage compartments amongst other functions. The ISF will consist of areas performing the following functions: · Receipt and dispatch area; · Interim storage space for all operational ILW and possibly all decommissioning ILW until a final disposal / solution facility becomes available (up to 100 years); · Package Inspection area; · A storage area that permits removal of ILW that may become LLW following a period of decay storage.
EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 187 / 257 FIGURE 68: EXAMPLE OF THE RECEPTION AREA OF A STORAGE FACILITY FOR RADIOACTIVE WASTE 12.2 Building Functions And Process Systems The ISF building will be a fully functional, self-contained building that is located separately from other building structures at the site. As such it will be surrounded by a fence and have a separate single point of entry. The building could be constructed on an elevation to reduce the risk of flooding and the building structure and walls will serve as shielding to reduce the radiation emitted from within the building. The ISF is designed to allow two future expansions if required to receive and store decommissioning wastes and to add packaging and conditioning facilities for the waste prior to disposal of the waste to the proposed GDF. It is anticipated that the first extension will be constructed (after shut down of the EPR 60 years after commencement of operations) in the EPR at the start of the decommissioning phase. If required, due to changes in national standards and practices a second extension may be constructed after approximately 100 years. This extension would be used to house state of the art packaging/conditioning/monitoring facilities for the waste prior to shipment to the final disposal/solution facility.
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A 2008-11-26 Sarah Greenwood Gary C
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