Solid Radioactive Waste Strategy Report.pdf - UK EPR

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EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 70 / 257 condense outside the waste container and are collected and transferred to the liquid waste tanks for further treatment. Application Drying is a suitable technique for volume reduction of: · Evaporator bottoms; · Decontamination solutions; · Sludges; · Spent resins. Design Data · System throughput per filling station: up to 140 litres per day; · The system can be designed with several filling stations; · Residual moisture of product: Less than 10% by weight achievable with no freestanding water remaining; · Volume reduction factor: Up to 10 (related to waste with solid content of 20% by weight). Advantages · High volume reduction factors; · In-container processing, i.e. waste is processed in the final disposal container; · Waste forms a solid product inside container (e.g. 200 litre drums); · Mobile skid-mounted units are available; · Proven design with extensive operational experience.
EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 71 / 257 FIGURE 16: CONDITIONING BY EVAPORATION 7.3.16 Conditioning Through Dewatering and Drying Dewatering of spent resins and sludge can be performed in a disposal container which is equipped with the appropriate dewatering internals and connections to a dewatering device. The dewatering device applies a negative pressure to the container internals extracting all free water [Ref. 46]. The efficiency of this technique can be increased by applying a heated jacket to the externals of the disposal container and condensing the resulting water vapours. The end product is a dry waste product. Dewatered resins can either be dryed or transferred to an in drum drying facility to be embedded in evaporator concentrate. Another option that could be explored is the regerneration of the resins and discharge of the resins as LLW and the regenerant, following drying as ILW for storage. Application · Dewatering of spent resins. Design Data · System throughput up to 300 litres/day; · The system can be designed with several filling stations; · Residual moisture of product: no free standing water. Advantages · In-container processing, i.e. waste is processed in-situ in the final disposal container; · Skid-mounted units available;
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A 2008-11-26 Sarah Greenwood Gary C
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