Solid Radioactive Waste Strategy Report.pdf - UK EPR

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EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 22 / 257 · Account for the impact of radioactive decay on operational ILW quantities. A Spent Fuel Interim Store to: · Store all spent fuel assemblies and activated components generated by the reactor for up to 100 years and final disposal. This strategy describes different wet and dry spent fuel interim storage technologies; · Cater of the EPR’s high burnup spent fuel; · Cater for the safe import and export of fuel and which is compatible with the UK EPR Spent Fuel Pool; · Cater for extension and the interim storage of fuel assemblies from other EPR reactors; · Provide adequate space and handling for safe operation and monitoring. This strategy also addresses decommissioning of the EPR and notably: · Immediate decommissioning scenario and programme following 60 years of reactor operation; · The quantities of solid radioactive waste generated from the decommissioning of the Nuclear Island. The waste inventory considers all Nuclear Island buildings are demolished to one metre below ground level. Building structures below -1m will be cleaned but are left in place; · The dominance of short-lived radionuclides in some decommissioning ILW will enable it to be declassified to LLW within the on site interim storage period; · Features facilitating decommissioning of the EPR; · It considers that the end state of the Nuclear Island decommissioning is one where residual radioactivity has been reduced to acceptable levels enabling the licence conditions to be removed and the land reused for other purposes. The intention is that this strategy will remain open and flexible. This will ensure that options are not foreclosed prematurely in terms of looking for and taking advantage of new developments. This might for example include the potential for centralised waste processing (incineration and melting/recycling) and storage facility service providers and spent fuel reprocessing. A number of industrial processes, recognised to represent international good practice, are used by different plant operators to treat radioactive wastes and store spent fuel. These processes have evolved over the years and performance has improved through the integration of operational feedback experience by the plant operators and plant designers.
EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 23 / 257 2.1 Base Case Assumptions In developing this strategy we have aligned with existing Government Policy and guidance concerning the Decommissioning and Waste Management Plan (DWMP) Base Case [Refs.1,2 and 3] for new nuclear power stations in the UK. The Base Case makes the following assumptions: Reactor The Base Case will be based on a single EPR station operating for 60 years. Radioactive waste LLW and ILW · LLW will be disposed of promptly after it has been generated to a suitable disposal facility; · LLW arising during operation and decommissioning will be packaged on site by the operator and dispatched to a disposal facility promptly after they have been generated. Operators will be required to ensure that any facilities needed for packaging are available on site although it is assumed that LLW will not be conditioned on site; · ILW from operations and decommissioning will be stored in safe and secure interim stores assumed to be on the site of the nuclear power station until decommissioning has been completed and a geological disposal facility is available to take the waste; · Operational ILW will be conditioned and packaged as soon as reasonably feasible after it is produced and before storage on-site; · LLW and ILW will be segregated and managed to ensure that volumes are minimised. Spent fuel · Spent fuel will be disposed of in a geological disposal facility; · New nuclear power stations will use uranium or uranium oxide fuel; · Spent fuel from new nuclear power stations will not be reprocessed; · Spent fuel will be stored in cooling ponds for a period of time, followed by storage in safe and secure interim stores on the site of the power station until decommissioning has been completed and disposal facilities are available to accommodate it. · The interim spent fuel storage facility is technically capable of being maintained or refurbished to last 100 years from the time spent fuel is firsat placed in it. Interim Storage · Utilities will be obliged to provide safe and secure interim storage facilities that are technically capable of being maintained or replaced to last for at least 100 years from the time when the waste or spent fuel is first emplaced in them; · Utilities will be obliged to provide the stores as they are needed subject to agreement with regulators and Secretary of State.
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Solid Radioactive Waste Strategy Report.pdf - UK EPR

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