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Modelling the Release of Radionuclides from the Spent Fuel and their Transport in the Near Field: a Coupled Approach

Published online by Cambridge University Press:  01 February 2011

Juan Merino ,
Esther Cera ,
Jordi Bruno  and
Aurora Martínez-Esparza
Juan Merino
Affiliation:
Enviros Spain, Pg. de Rubí 29–31, 08197 Valldoreix (Spain)
Esther Cera
Affiliation:
Enviros Spain, Pg. de Rubí 29–31, 08197 Valldoreix (Spain)
Jordi Bruno
Affiliation:
Enviros Spain, Pg. de Rubí 29–31, 08197 Valldoreix (Spain)
Aurora Martínez-Esparza
Affiliation:
Enresa, C/ Emilio Vargas 7, 28043 Madrid (Spain)
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Abstract

In this work we have developed a model for the release of radionuclides from the spent fuel coupled with their transport through the near field. A compartmental approach has been used, as this methodology is well suited to model integrated systems. Several processes have been taken into account: oxidative dissolution of the spent fuel matrix, radioactive decay and chains, diffusive and advective transport, retardation by sorption and secondary phase precipitation. Results illustrate the complex evolution of the radionuclide concentrations in the gap and the near field. Hence, the main conclusion from this study is the requirement to model this coupled system using a compartmental integrated approach.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 807: Symposium Scientific Basis for Nuclear Waste Management XXVII , 2003 , 785
Copyright
Copyright © Materials Research Society 2004

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References

REFERENCES

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