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What Will be the Engineered Barriers for Deep Disposal of High Level Radioactive Wastes in the Future?

by F. Plas, Commissariat a l'Energie Atomique, France,
M. Jorda, Commissariat a l'Energie Atomique, France,
R. Atabek, Commissariat a l'Energie Atomique, France,
J. C. Robinet, Commissariat a l'Energie Atomique, France,
J. M. Hoorelbeke, Commissariat a l'Energie Atomique, France,
J. Bellet, Commissariat a l'Energie Atomique, France,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1990

Abstract:

Two sealing approaches are currently being developed in France for deep geological disposal of high-level wastes. One is based on the use of swelling clay in order to restore the initial permeability of the host formation at all points of the disposal area. In the case of the second concept, granular materials are considered with an appropriate design of the disposal area and the local emplacement of impermeable dams in the drifts and at the bottom of access shafts to avoid any short-circuit between the disposal site and the biosphere. The characteristics and present limits of each concept are presented and discussed, leading to outline the main research and development future axes.

Subject Headings: Waste disposal | Radioactive wastes | Granular materials | Clays | Waste management | Underground storage | Sealing | France | Europe

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