Solid Radioactive Waste Strategy Report.pdf - UK EPR

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EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 76 / 257 TABLE 15: PACKAGES FOR OPERATIONAL WASTE Waste Package Waste Type Comments 500 l stainless steel drum ILW These can be shielded by adding an internal layer of cementitious grout. Macroencapsulation of a 200 l drum in a 500 l drum ILW This option could be used for noncompactable ILW or for providing additional shielding. Cast iron container ILW These containers are designed for use with a variety of waste types including dewatered resins and wastes with a high specific activity. 7.4.3.1 500 Litre NDA Annular Grouted Drum The current NDA ILW disposal concept is based on the use of 500 l stainless steel drums (as specified by RWMD) as the main waste package type. Figure 19 shows how these could be grouped to assist in interim storage. FIGURE 19: 500 LITRE DRUMS 7.4.3.2 Conditioning Through Macro Encapsulation ILW not suitable for placement in cast iron containers, will be placed into 200 litre drums [Ref.47]. These wastes will include solid waste and spent filters. If required, the wastes will then be grouted into the drums. The 200 litre drums will then be placed into the 500 litre annular NDA drums and the void space filled with cement grout.
EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 77 / 257 Application · Encapsulation of dried: o o o o o Design Data Evaporator bottoms; Filter sludges / slurries; Spent resin; Decontamination solutions; Solid radwaste (for example, spent filter elements, super compacted waste etc.). · System throughput: 3 drums/hour. Advantages · Proven system design; · Customised application; · The final properties of grout prepared with clean water can be tuned to the characteristics needed e.g. leachability, compressive strength and water resistance; · Macroencapsulated waste forms do not affect chemistry or the aging characteristics of the cement. FIGURE 20: CONDITIONING BY MACRO ENCAPSULATION 7.4.3.3 Cast Iron Container The cast iron container is a multi-purpose cask mainly used for the processing, handling and storage of ILW. As this container provides a safe handling and storage enclosure it is suitable for dewatered resins, evaporator concentrates and other components of higher specific activities.
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A 2008-11-26 Sarah Greenwood Gary C
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Solid Radioactive Waste Strategy Report.pdf - UK EPR

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