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Alteration of Repository Structural Materials Within the First Few Years

Published online by Cambridge University Press:  10 February 2011

J. M. West ,
M. Cave ,
P. Coombs ,
A. E. Milodowski  and
C. A. Rochelle
J. M. West
Affiliation:
British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK
M. Cave
Affiliation:
British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK
P. Coombs
Affiliation:
British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK
A. E. Milodowski
Affiliation:
British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK
C. A. Rochelle
Affiliation:
British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK
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Abstract

A series of batch laboratory experiments were set up to study the gross effects of microbial activity on repository geochemistry, radionuclide sorption and integrity of repository and host rock materials. The experiments were fully monitored for 550 days and some were continued, under apparently aerobic conditions, for 1700 days. Geochemical modelling of the experiments reproduced many of their features, but showed that the contents were not in chemical equilibrium after 1700 days with redox disequilibrium a likely feature. The models could not predict localised reactions such as enhanced pitting of steel which appeared to be microbially mediated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 503
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

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