Predicting the Behaviour of Defected CANDU Fuel Oxidation in Air With the USA DOE Semi-Empirical Model for the Oxidation of Defected LWR Fuel
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Abstract
The USA Department of Energy (DOE) semi-empirical model for the oxidation of defective LWR fuel in air was extended to CANDU fuel. Model results were consistent with available experimental test data for irradiated CANDU fuel in the temperature range 200-400 ⁰C.
For the only available data at lower temperatures (150⁰C) from the AECL Controlled Experiment (CEX-1, 1980-1997), the model predicted full conversion to U3O7/U4O9 in 14.8 years in agreement with the experimental value of 15.5 years. The model also indicated that when terminated in 1997, the CEX-1 experiment was midway to cladding breaching due to
oxidation to U3O8.
For the only available data at lower temperatures (150⁰C) from the AECL Controlled Experiment (CEX-1, 1980-1997), the model predicted full conversion to U3O7/U4O9 in 14.8 years in agreement with the experimental value of 15.5 years. The model also indicated that when terminated in 1997, the CEX-1 experiment was midway to cladding breaching due to
oxidation to U3O8.
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