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The primary goal of optimizing fuel reloads is to minimize the cost of nuclear fuel when meeting the operational requirements and restrictions imposed on the operation of the core zone. ÚJV Řež has been dealing with this issue since the 1990s when the software OPTIMAL was developed for Dukovany NPP.
Its upgraded version is still used successfully in both routine operation and advanced fuel cycle designs for VVER-440 reactors. For VVER-1000 reactors, ÚJV Řež uses a new-generation LPOpt tool, which can be used to optimize fuel reloads of any type of reactor.
