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Content archived on 2023-01-04

Safety of Final Storage in Geological Formations : Materials Research Aspects, 1988-1991

Objective

To analyse the phenomena in the field surrounding radioactive waste packages in order to define the main mechanisms which dominate the release of the radioactive elements.



Progress to end 1990

An apparatus capable to analyse leaching of glasses and corrosion of the canning materials in a thermal gradient has been set up. A test has been performed using glasses loaded with cesium in order to verify if cesium diffusion is altered by the thermal gradient. It was found that in porous media containing calcium carbonates a calcium carbonate layer is formed at the surface of the glass which acts as a barrier against cesium diffusion. A final report is in preparation. Publication: JAC Marples, N.GodonF.Lanza P.van Iseghem: Radionuclide release from high level waste forms under repository conditions in clay or granite. Presented at the Third Eur.Conf. on radioactive waste management and disposal Luxembourg,Sept. 1990.

Detailed description of work foreseen in 1991 (expected results)

Using the apparatus described above, tests will be performed with porous media containing a variable amount of carbonaceous material to verify if it is possible to cause the formation of a calcium carbonate layer which could act as a protective barrier for the corrosion of mild steel canning.

Short description of evolution of work in 1992

No continuation is foreseen in 1992. 2

Topic(s)

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Call for proposal

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Funding Scheme

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Coordinator

Joint Research Centre (JRC)
EU contribution
No data
Address

21020 Ispra
Italy

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Total cost
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