Radiological Safety Issues for Spent Fuel Wet Storage (Ponds) Facilities Decommissioning at UK Magnox Power Stations

Abstract

The Decommissioning of the Trawsfynydd Cooling Ponds was phased with the initial contract awarded for Ponds Furniture Removal. The ambitious programme timescale, planned number of workers, and hostile radiological environment for both external and internal dose provided a challenge to the Contractor and BNFL alike. Dose management techniques proved critical in controlling the exposure of personnel in a number of ways. These were daily dose recording and review, occupancy management, distancing, and use of temporary shielding. Waste management covered the packaging of waste stream containers and minimisation of ILW generation by development of a unique assay and sentencing technique. This paper briefly addresses these issues as part of a constrained decommissioning objective.