J. François, E. García-Cervantes, C. Martin-Del-Campo
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引用次数: 0
Abstract
The objective of this paper is to study the reactivity behaviour and the isotopic fuel performance of an ASTRID-like reactor under a breed and burn strategy for two core designs: with oxide and with metallic fuel. The proposed reshuffling scheme was simulated with MCNP6 and the JEFF-3.2 cross-sections library to extend the fuel life by two more cycles. Our findings showed that the implementation of the reshuffling scheme enhanced the fuel utilisation, obtaining cycle extensions of 805 days and 1305 days, over the first 365 days, for the oxide and metallic fuelled designs, respectively. For the metallic-fuelled design the breeding of Pu-239 achieved a production of 577.7 kg, which represents a production rate of 126.3 kg/EFPY. The conversion rate for the metallic-fuelled design was 1.06 and 0.96 for the oxide-fuelled design. Regarding the coolant void reactivity worth, for the oxide-fuelled design it becomes positive after the second fuel reshuffling.
期刊介绍：
Today, nuclear reactors generate nearly one quarter of the electricity in nations representing two thirds of humanity, and other nuclear applications are integral to many aspects of the world economy. Nuclear fission remains an important option for meeting energy requirements and maintaining a balanced worldwide energy policy; with major countries expanding nuclear energy"s role and new countries poised to introduce it, the key issue is not whether the use of nuclear technology will grow worldwide, even if public opinion concerning safety, the economics of nuclear power, and waste disposal issues adversely affect the general acceptance of nuclear power, but whether it will grow fast enough to make a decisive contribution to the global imperative of sustainable development.
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