Long Term Diffusion project

Beskrivning

The Long Term Diffusion (LTD) Project aims at obtaining quantitative information
on matrix diffusion in crystalline rocks. Both in situ and lab-based experiments are
planned for this purpose. In Phase I, an in situ monopole diffusion experiment aims toquantify the extent of matrix diffusion in an undisturbed rock matrix. In addition, insitu porosity and pore connectivity will be studied separately by an impregnation
experiment. Laboratory-based studies include analysis of natural tracer profiles,
analysis of diffusion processes in archived samples as well as support of the in situ
tests. Rock matrix characterisation in situ within Grimsel Test Site Phase V.
nvestigations at the Grimsel Test Site (GTS) in Switzerland continued under international research project cluster Grimsel Phase VI. The Long Term Diffusion Experiment project (LTD) started in 2005. Its partners are the National Cooperative for the Disposal of Radioactive Waste (NAGRA), the Laboratory of Radiochemistry and two organisations from Japan (Research Center for Deep

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Geological Environments, National Institute of Advanced Industrial Science and Technology (AIST) and Japan Nuclear Cycle Development Institute (JNC)) and finally the Nuclear Research Institute Řež (NRI) from Czech republic.
StatusSlutfört
Gällande start-/slutdatum01/01/200531/12/2013

Vetenskapsgrenar

  • 116 Kemi
  • 119 Övrig naturvetenskap