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H Nifenecker's Accelerator Driven Subcritical Reactors (Series in PDF

By H Nifenecker

ISBN-10: 0750307439

ISBN-13: 9780750307437

This publication describes the elemental wisdom in nuclear, neutron, and reactor physics helpful for knowing the primary and implementation of accelerator pushed subcritical nuclear reactors (ADSRs), sometimes called hybrid reactors.

Since hybrid reactors might give a contribution to destiny nuclear power construction, the booklet starts with a dialogue of the overall power challenge. It proceeds through constructing the basic physics of neutron reactors, together with the fundamental nuclear physics concerned. The publication then offers computational tools, with specified emphasis on Monte Carlo tools. It examines the specifics of ADSR, ranging from the neutron spallation resource to security features. a radical dialogue is given at the dimension of hybrid reactors, which follows very assorted constraints from that of serious reactors. the chance to optimize the resource significance is tested intimately. The dialogue of the gas evolution follows with its relevance to safeguard and to the waste construction and incineration. The stipulations for having a relentless reactivity over sufficiently lengthy lapse of time also are mentioned. The e-book additionally evaluates a couple of sensible designs which were proposed. ultimately, the final bankruptcy bargains with the exam of proposed and attainable waste transmutation rules and the position that could be performed by way of ADSR during this context. the capability good thing about the Thorium cycle is mentioned in addition to assorted situations which may be used to enforce it.

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Additional info for Accelerator Driven Subcritical Reactors (Series in Fundamental and Applied Nuclear Physics)

Sample text

This approach is followed, notably, by the UK, Japan, France and Belgium. In both cases, some sort of storage of radioactive wastes is needed. Two options are considered: 1. Deep underground storage with or without possible retrieval. 2. Surface or sub-surface storage. It is clear that these two last solutions can only be temporary, since the halflife of many of the wastes exceeds, by far, the life span of civilizations. The proponents of such solutions argue that technical progress may allow a better evaluation of the safety or feasibility of alternative solutions.

Two possible breeding cycles were considered: the U–Pu cycle using fast neutron reactors and the Th–U cycle using thermal neutron reactors. In both cases the initial loads are assumed to be mixtures of the fertile element (U or Th) with plutonium taken from the spent fuels of PWR and BWR reactors. It is important to make sure that the amounts of plutonium available would be sufficient to supply all the breeding reactors by 2050. 2 GWe reactor requires an initial inventory of 5 tons of plutonium. A 1200 MWe reactor à However, efficient enough radiation cooling limits the size and power of the reactor to less than about 1 GWth.

The Th–U cycle The possibility of breeding 233 U from thorium was demonstrated by the MSRE experiment [49]. The MSBR [50] project has produced a rather detailed design for a large molten salt reactor, with interesting breeding possibilities. As an alternative to the solid fuel U–Pu breeders we have studied the potential of the Th–U cycle with MSR reactors. The first fissile loads of the 1 GWe MSR are made of industrial plutonium obtained from spent PWR fuel reprocessing. Ã The initial plutonium load is replaced by 233 U.

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Accelerator Driven Subcritical Reactors (Series in Fundamental and Applied Nuclear Physics) by H Nifenecker

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