Abstract

In the EFTTRA-T3 irradiation experiment eight uranium bearing inert matrix fuel capsules and eight capsules containing inert matrices have been irradiated. The irradiations were based on the matrices: MgO, MgAl 2O 4, Y 3Al 5O 12, Y 2O 3 and CeO 2. The heterogeneously dispersed fuel contained fissile inclusions of UO 2 or (U,Y)O x . These capsules were irradiated for 198.87 days in the HFR Petten. The burn-up of the U-bearing capsules was 17–20% FIMA. The present paper describes all aspects of the EFTTRA-T3 irradiation; the fabrication and characterisation of the samples, irradiation and both destructive and non-destructive PIE.

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