DSRL1230 - Shaft & Silo Process Cell & Waste Transfer System

As part of the programme of works to decommission and restore the Dounreay Site, DSRL requires the provision of a process that has been developed to enable waste to be packaged in a form that is compliant with the Radioactive Waste Management (RWM) specifications, demonstrated by the receipt of a Letter of Compliance (LoC). The finalised scheme design of the Process Cell includes a series of independent Plant items that provide the means to sort, segregate and size reduce the Wet Silo and Shaft solid waste and batch that waste into 200L drums, ready for downstream assay and packaging for long-term safe storage. The Process Cell plant also separates and collects the corresponding Liquid and Sludge Waste, and conditions it to produce a concentrated sludge waste stream that is metered into modified 200L drums pre-filled with cement powders. The Liquid Waste is then further filtered and the subsequent grey water is re-used within the Process Cell before being ultimately discharged to the downstream Effluent Treatment Plant. The Waste Transfer System provides the means to safely transport waste from the Wet Silo to the main Process Cell at the Shaft headworks. This is achieved by the use of a shielded container mounted on a trolley that can be raised and docked to engineered ports at either the Wet Silo or Shaft Facilities. The Contract is programmed to be completed over a maximum 190-weeks duration with a single contract all-encompassing award targeted for 8 November 2021.

Services

05/11/2021 12:00:00

98391000-0  Decommissioning services