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A New Criterion for the Degradation of a Defective Spent Fuel Rod under Dry Storage Conditions Based on Nuclear Ceramic Cracking

Published online by Cambridge University Press:  01 February 2011

Lionel Desgranges
Affiliation:
lionel.desgranges@cea.fr, CEA, DEN/DEC, Saint Paul lez Durance, France
François Charollais
Affiliation:
francois.charollais@cea.fr, CEA, DEN/DEC, Saint Paul lez Durance, France
Isabelle Felines
Affiliation:
isabelle.felines@cea.fr, CEA, DEN/DEC, Saint Paul lez Durance, France
Cécile Ferry
Affiliation:
cecile.ferry@cea.fr, CEA, DEN/DPC, Saclay, France
Jean Radwan
Affiliation:
jean.radwan@cea.fr, CEA, DEN/DPC, sacaly, France
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Abstract

Experimental results using environmental SEM on intentionally defected fuel particles showed that oxidation induced cracking could lead to the degradation of HTR coated particles. The interpretation proposed for the swelling resulting from cracking can be extended to irradiated nuclear fuels. That is why a new criterion was proposed to defined safe handling of defective fuel in dry storage condition. This criterion defines the time needed to create an oxidized layer thickness leading to significant cracking.

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Type
Research Article
Copyright
Copyright © Materials Research Society 2009

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