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Influence of Container Base Material (Fe) on SIMFUEL Leaching Behavior

Published online by Cambridge University Press:  21 March 2011

J. Quiñones ,
J.A. Serrano ,
P.P. Díaz ,
J.L. Rodríguez Almazán ,
J. Cobos ,
J.A. Esteban  and
A. Martà–nez-Esparza
J. Quiñones
Affiliation:
CIEMAT. Departamento de Fisión Nuclear. Avda. Complutense, 22. 28040 Madrid, Spain
J.A. Serrano
Affiliation:
CIEMAT. Departamento de Fisión Nuclear. Avda. Complutense, 22. 28040 Madrid, Spain
J.L. Rodríguez Almazán
Affiliation:
CIEMAT. Departamento de Fisión Nuclear. Avda. Complutense, 22. 28040 Madrid, Spain
J. Cobos
Affiliation:
CIEMAT. Departamento de Fisión Nuclear. Avda. Complutense, 22. 28040 Madrid, Spain
J.A. Esteban
Affiliation:
ENRESA. C/ Emilio Vargas, 7. 28043 Madrid, Spain
A. Martà–nez-Esparza
Affiliation:
ENRESA. C/ Emilio Vargas, 7. 28043 Madrid, Spain
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Abstract

The chemical stability of spent fuel will be greatly influenced by the redox potential of the near field. Presence of reductants such as iron is likely to be an important factor to maintain the original integrity of spent fuel. In this work experimental data about the influence of metallic iron (container base material) on SIMFUEL leaching behavior under simulated granite and saline repository conditions is presented. In the presence of iron uranium concentration undergoes a sharp decrease. This is much more noticeable in the experiments performed under initial oxic conditions. The effect of iron on simulated fission products of SIMFUEL is very important for the elements with high redox sensitivity such us molybdenum. On the contrary, strontium remains stable during the entire tests and it seems not be affected by changes in redox potential.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 663: Symposium – Scientific Basis for Nuclear Waste management XXIV , 2000 , 435
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

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