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Conference Article: HTR coated particle fuel: irradiation behaviour and performance prediction

Burck, W.; Nabielek, H. (KFA, Juelich (Germany)); Christ, A. (HRB, Mannheim (Germany)); Ragoss, H. (GHT, Bensberg (Germany)); Mehner, A.W. (HOBEG, Hanau (Germany))

Abstract

The spherical fuel element containing TRISO fuel particles has been successfully qualified. Many of these results are generic to the coating and fuel element design and will be used as base for the new reference fuel element. Post irradiation examination revealed no irradiation induced particle failures at simulated normal operation conditions. This is especially true for several thousand fuel elements irradiated in the AVR experimental test reactor. In the evolutionary process establishing fuel performance models for normal operation and accidents, practically all sub-models have been validated and provide a realistic base for prediction. Few data exist to verify the model predictions which combine all sub-models. Nevertheless, the presently available refined models are helpful in particle design should new requirements arrive, and in making predictions under conditions outside the experimental range

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key words: Gas Cooled Reactor, Nuclear Technology
Reference:
Specialists' meeting on gas-cooled reactor fuel development and spent fuel treatment Moscow (Russian Federation) 18-21 Oct 1983
International Atomic Energy Agency, International Working Group on Gas-Cooled Reactors, Vienna (Austria); State Committee on the Utilisation of Atomic Energy of the USSR, Moscow (Russian Federation)
IWGGCR--8, pp:174-188