Conceptual Design Study of Geological Disposal System of High-Level Waste

by K. Hara, Power Reactor and Nuclear Fuel, Development Corp, Naka-Gun, Japan,
T. Fujita, Power Reactor and Nuclear Fuel, Development Corp, Naka-Gun, Japan,
A. Saotome, Power Reactor and Nuclear Fuel, Development Corp, Naka-Gun, Japan,
M. Uchida, Power Reactor and Nuclear Fuel, Development Corp, Naka-Gun, Japan,
N. Sasaki, Power Reactor and Nuclear Fuel, Development Corp, Naka-Gun, Japan,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1991

Abstract:

Conceptual design study of geological disposal system for HLW was carried out taking into account geological environment in Japan, in order to provide disposal concepts for integrated safety assessment and to demonstrate the technical feasibility of the concepts. Various evaluations have been conducted, such as mechanical stability of tunnel and shaft, thermal effects of heat released from waste glass on multi-barrier system, groundwater flow in and around a repository, and mechanical stability of engineered barrier system. Based on these analytical studies, generic design concepts of geological disposal system for crystalline rocks and sedimentary rocks were presented.

Subject Headings: Groundwater flow | Geology | Conceptual design | Water treatment | Waste disposal | Radioactive wastes | Feasibility studies | Japan | Asia

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