Proposed Deep Geologic Repository for Low and Intermediate-Level Radioactive Waste at the Bruce nuclear site, Tiverton, Ontario

CIM MEMO 2010
Ian Pritchard, Derek Wilson,
Abstract A Deep Geologic Repository (DGR) for the long-term management of operational Low and Intermediate Level Radioactive Waste (L&ILW) is being proposed by Ontario Power Generation at
the 932-ha Bruce site. The Bruce site is located approximately 225 kilometres northwest of Toronto near Tiverton, Ontario. The project is currently in the environmental assessment and regulatory approvals phase. This paper describes OPG’s proposed DGR including the underground repository concept comprised of horizontally-excavated emplacement rooms arranged in two panels with access provided via two vertical concrete-lined shafts. The emplacement rooms would be constructed at a depth of about 680 m within limestone. This limestone formation is laterally extensive and is directly overlain by 200 m of low permeability shale. The low-permeability diffusion-controlled geosphere immediately surrounding and above the repository will assure long term isolation of the L&ILW.
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