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Abstract

A set of calculations has been carried out with the EURES-ARIES code system to study the swelling performance limits of a sodium bonded mixed carbide pin design, which was recently proposed for the introduction of advanced fuels into liquid metal fast breeder reactors. The results indicate that a useful peak burn-up of 150 000 MWd/ton can be attained with pin diametral plastic deformations up to 2%, under optimal irradiation conditions. However, probable thermal disturbances in the fuel and cladding mechanical deterioration due to steel carburization still represent a risk source for pin failure. A further improvement of the swelling performance of mixed carbides is therefore needed to refine the examined pin design for future full-scale reactor applications.

Additional information

Authors: RONCHI C, JRC KARLSRUHE ESTAB. (GERMANY);VAN DE LAAR H, JRC KARLSRUHE ESTAB. (GERMANY);BLANK H JRC KARLSRUHE ESTAB. (GERMANY), JRC KARLSRUHE ESTAB. (GERMANY)
Bibliographic Reference: NUCLEAR TECHNOLOGY, VOL. 68 (1985), PP. 48-65.
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