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In Situ Migration Experiments in the Boom Clay at Mol ; Experimental Method and Preliminary Results

Published online by Cambridge University Press:  26 February 2011

M. Put ,
M. Monsecour ,
A. Fonteyne ,
H. Yoshida  and
P. De Regge
M. Put
Affiliation:
SCK/CEN, Boeretang 200, 2400 Mol, BELGIUM
M. Monsecour
Affiliation:
SCK/CEN, Boeretang 200, 2400 Mol, BELGIUM
A. Fonteyne
Affiliation:
SCK/CEN, Boeretang 200, 2400 Mol, BELGIUM
H. Yoshida
Affiliation:
PNC, 9–13 1-Chome, Akasaka, Minato-Ku, Tokyo, JAPAN
P. De Regge
Affiliation:
SCK/CEN, Boeretang 200, 2400 Mol, BELGIUM
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Abstract

A first generation of underground migration experiments is described, consisting of labelled clay cores emplaced in boreholes drilled in the Boom clay formation. The boreholes are sealed by natural convergence of the clay and porewater percolates through the labelled clay cores which are consolidated in situ. After monitoring of the radioactive tracers in the percolating porewater, the experiment is retrieved from the borehole and the tracer profile is measured in the clay cores. With the exception of accelerated porewater flow, due to the existence of a high hydraulic head around the underground gallery, the experimental conditions are close to those expected in the far-field of a closed repository for radioactive waste. The main advantage of this approach is the availability of real porewater during relatively long-term experiments. Results are reported for the experiments performed with europium and strontium tracers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 127: Symposium BERLIN – Scientific Basis for Nuclear Waste Management XII , 1988 , 621
Copyright
Copyright © Materials Research Society 1989

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References

REFERENCES

1. Put, M., Radioactive Waste Management and the nuclear fuel cycle. Volume 6, No. 3–4 (1985), pp. 361–390.Google Scholar
2. Put, M. and P. Henrion. Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, Special Issue of Radiochimica Acta, 1988.Google Scholar
3. Henrion, P., Monsecour, M., Fonteyne, A., Put, M. and De Regge, P., Radioactive waste Management and the Nuclear Fuel Cycle. Volume 6, no. 3–4 (1985), pp. 313–359.Google Scholar