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Corrosion of Steel Drums Containing Cemented Ion-Exchange Resins as Intermediate Level Nuclear Waste

Published online by Cambridge University Press:  28 March 2012

Gustavo S. Duffó ,
Silvia B. Farina  and
Fátima M. Schulz
Gustavo S. Duffó
Affiliation:
Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina. Universidad Nacional de San Martín, Argentina. Comisión Nacional de Energía Atómica, Depto. Materiales, Av Gral Paz 1499, (1650) San Martín, Buenos Aires, Argentina.
Silvia B. Farina
Affiliation:
Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina. Universidad Nacional de San Martín, Argentina.
Fátima M. Schulz
Affiliation:
Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.
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Abstract

Ion-exchange resins are used for purification of radioactive liquid waste from nuclear reactors. After exhaustion, resins become intermediate level radioactive waste to be managed. They have to be immobilized before being stored to improve the leach resistance of the waste matrix and to maintain mechanical stability for safety requirements. The immobilized resins are thus contained in steel drums that can undergo internal corrosion depending on the presence of certain contaminants. This work shows an study of the corrosion susceptibility of steel drums in contact with cemented ion-exchange resins with different types and contents of aggressive species. Results show that the corrosion depth of the steel drums after a period of 300 years (foreseen life-span of the radioactive waste disposal facility), in the most unfavorable case (high chloride contamination), will be considerably lower than the thickness of the wall of the drums.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1475: Symposium NW – Scientific Basis for Nuclear Waste Management XXXV , 2012 , imrc11-1475-nw35-p27
Copyright
Copyright © Materials Research Society 2012

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References

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