论文信息 - Comparative Transient Analyses of Accelerator-Driven Systems with Mixed Oxide and Advanced Fertile-Free Fuels

Comparative Transient Analyses of Accelerator-Driven Systems with Mixed Oxide and Advanced Fertile-Free Fuels

Comparative safety analyses and investigations were performed for a small-scale ADS with conventional MOX fuel and an 800 MWth power class ADT with advanced fertile-free fuels, both cooled by Pb/Bi. The analyses covered perturbations of the source [e.g. unprotected transient overcurrent (UTOC) and beam interruptions] as well as perturbations on the core side, protected/unprotected transient overpower (P/UTOP) induced by reactivity additions and unprotected loss of flow (ULOF) accidents. These showed that the small-scale ADS had a very good safety performance, while for the 800 MWth ADT with ZrO2 and MgO matrix based fuels some safety problems were identified, mainly related to the large positive void feedback and high linear power rate. Further design and safety optimisations are under consideration.

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