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Justification of Physical Characteristic of Mixed Oxide (MOX) in VVER-1200 Reactor |
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PP: 157-164 |
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Author(s) |
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J. Daniel,
J. K. Salu,
S. Ikemba,
S. A. Olubiyi,
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Abstract |
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| The increasing burnup in a Mixed Oxide (MOX) fuel has necessitated a revisit of the strategic approaches of the
fuel cycle development in Light Water Reactors (LWRs) using the MOX fuel option. This paper therefore studied the
improvements in the MOX fuel utilization in LWRs. Different trends of the fuel cycle development were considered by the
type of reactor used. The research is based on the experiences accumulated on the typical standard enriched uranium fuels
in LWRs, as well as the lessons learned from the plutonium utilization in VVER reactors. Using the reactor-grade
plutonium and depleted uranium, the partial reloading method was used and the model simulated in GETERA-93 from the
beginning of the campaign and at the end of the campaign, considering the multiplication factor of both natural uranium
fuel and that of reactor-grade plutonium at different enrichments. Safety parameters such as Fuel Temperature Coefficients
(FTC), Moderator Temperature Coefficients (MTC), Moderator Density Coefficients (MDC), and Reactivity were
calculated. From the values obtained, it was observed that these parameters show full agreement with the reactor safety
requirements which gives the model validity |
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