Solid Radioactive Waste Strategy Report.pdf - UK EPR

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EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 74 / 257 7.4.2 LLW Packaging For the UK EPR the 200 litre carbon steel or stainless steel drum will be the primary package used for LLW waste forms. These drums will provide a passively safe waste form for interim storage. Drum with flat cover Flat cover in position Curved head cover Angle ring cover FIGURE 18: 200 LITRE CARBON STEEL OR STAINLESS STEEL DRUM
EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 75 / 257 TABLE 14: PREDICTED ANNUAL WASTE PACKAGING ARRANGEMENTS FOR SHIPMENT TO LLW DISPOSAL FACILITY Evaporator Concentrates Air and Water Filters Dried active waste Dried active waste Oils Metal maintena nce wastes Estimated volume (m³/y) 3 4 37.5 12.5 2 3.6 Conditioning process Primary packaging Number of primary packages Volume primary packages (m³/y) Total volume primary packages (m³/y) In-Drum Drying 200 l carbon steel drum Compaction/ shredding 200 l carbon steel drum Raw for Incineration 200 l carbon steel drum Super compaction 200 l carbon steel drum Incineration 200 l carbon steel drum Melting for recycling 200 l carbon steel drum 27.8 7.4 6.0 30.2 0.1 2.7 5.6 1.5 1.2 6.0 0.0 1.3 15.6 The disposal volumes provided are based on the assumption that no additional packaging or overpacking is required to dispose of these waste containers. The waste volumes for combustible waste, redundant metal components and oil are the estimated volumes of the residual waste that must be deposited in the disposal site. As these wastes are shipped for off-site treatment and conditioning, the volumes reported will be residual volumes generated at the processing site rather than at the NPP. Additional secondary waste volumes generated at the site of processing (e.g. protective clothing, residuals from off gas filters at the incinerator) are possible but these are not included in the estimates given in the table. Table 15 lists some of the waste package types that may be used. ILW that will meet the LLW threshold limits during the timescales for decay storage on site prior to disposal off-site may be packaged in primary containers only. 7.4.3 ILW Packaging The waste packages to be used for ILW will, as far as possible, be designed to be used with generic handling equipment and storage or disposal concepts. The majority of waste packages are based on a standard design of 500 litre drum, as defined by the NDA. Although the external dimensions, lifting features and mass limits are common to all designs the internal design can vary to accommodate different waste types. For example, a 500 l drum may have internal shielding, may be designed for direct encapsulation of waste or may be designed to receive a smaller drum that will then be grouted in place.
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