Strategic Study of CAE >> 2008, Volume 10, Issue 3
Geological Disposal of High Level Radio Active Waste:Progress and Challenges
Beijing Research Institute of Uranium Geology, China National Nuclear Corporation, Beijing 100029, China
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Abstract
Safe disposal of high level radioactive waste is a challenging task facing the scientific and technological world. This paper introduces the latest progress of high level radioactive waste disposal programs in the world,and discusses the key scientific challenges: the precise prediction of the evolution of a repository site; the characteristics of deep geological environment;the behaviour of deep rock mass,groundwater and engineering material under coupled conditions(intermediate to high temperature, geostress, hydraulic, chemical, biological and radiation process, etc); the geochemical behaviour of transuranic radionuclides with low concentration and its movement with groundwater;and the safety assessment of disposal system. Several large-scale research projects and several hot topics relating to high-level waste disposal are also introduced.
Keywords
high level radioactive waste ; geological disposal ; underground research laboratory ; key scientific challenges
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