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Powerful Gels for Power Plant Decontamination

Published online by Cambridge University Press:  10 February 2011

D. Cheung ,
J.L. Pascal ,
S. Bargues  and
F. Favier
D. Cheung
Affiliation:
LAMMI, ESA 5072 CNRS, University Montpellier2, c.c.015, F-34095 Montpellier Cedex 05
J.L. Pascal
Affiliation:
LAMMI, ESA 5072 CNRS, University Montpellier2, c.c.015, F-34095 Montpellier Cedex 05, [email protected]
S. Bargues
Affiliation:
STMI, ZAC de Courcelles, 1 route de la Noue, F-91196 Gif-sur-Yvette, [email protected]
F. Favier
Affiliation:
LAMMI, ESA 5072 CNRS, University Montpellier2, c.c.015, F-34095 Montpellier Cedex 05
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Abstract

Decontamination for on-site maintenance during operation and for decommissioning of end-of-operation plants can be achieved using thixotropic corrosive gels to dissolve the radioactive deposit trapped at the surface of stainless steels. The dissolving agent is a corrosive solution of a Ce(IV) salt stabilized in concentrated nitric acid. Rheological properties of the gels are adjusted to give optimal spraying characteristics and surface adhesion using silica of small particle size and non-ionic surfactants. The formulation of the gels is such that they allow easy decontamination processing, and minimize the liquid and solid waste generated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 631
Copyright
Copyright © Materials Research Society 2000

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References

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