§ Mr. Cartwrightasked the Secretary of State for the Environment if he will estimate the volume of radioactive waste likely to arise as a result of decommissioning a civil Magnox and advanced gas-cooled nuclear reactor power station.
§ Mr. WaldegraveThe CEGB has estimated that decommissioning a typical 500 MW(e) Magnox reactor will give rise to about 14,000 m³ of low-level waste at the stage of dismantling plant external to the reactor biological shield and about a further 13,000 m³ of low-level waste and 7,500 m³ of intermediate-level waste in subsequent dismantling of the biological shield and remaining plant (stage 3).
The corresponding figures for a typical 1,300 MW(e) AGR are 4,500m³ of low-level waste at the earlier of these stages, and 5,200m³ of low-level waste and 6,500m³ of intermediate level waste at the later stage.
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§ Mr. Cartwrightasked the Secretary of State for the Environment if he will list the approximate volumes of radioactive waste currently stored at each of the civil nuclear installations in the country, including the reprocessing plant at Sellafield.
§ Mr. WaldegraveThe general practice is to dispose of low-level wastes as they arise. Approximate volumes of stocks of other wastes in January 1985 are given as follows for each nuclear installation. These figures are based on information of stocks in January 1984 and estimates of arisings during 1984 which have been agreed between my Department and NIREX:
M3 BNFL Sellafield 27,500 Intermediate-level waste 1,165 High-level liquids Springfields 1,360 Uranic residues Capenhurst 660 Uranic residues CEGB Stations: Stocks of intermediate level wastes Berkeley 1,400 Bradwell 320 Dungeness 320 Hartlepool 20 Heysham 20 Hinkley Point 900 Oldbury 260 Sizewell 230 Transfynydd 370 Wylfa 25 SSEB Stations Hunterston 1,760 Torness Zero UKAEA Sites Dounreay 780 High-level liquids 450 Miscellaneous solid inter mediate-level wastes Harwell 80 Intermediate-level wastes Winfrith 320 Intermediate-level wastes