This paper compares potential nuclear fuel cycle strategies – once-through, recycling in thermal reactors, sustained recycle with a mix of thermal and fast reactors, and sustained recycle with fast reactors. Initiation of recycle starts the draw-down of weapons-usable material and starts accruing improvements for geologic repositories and energy sustainability. It reduces the motivation to search for potential second geologic repository sites. Recycle in thermal-spectrum nuclear reactors achieves several recycling objectives; fast nuclear reactors achieve all of them.

Summary of Brazil's efforts to develop nuclear power.

D. Lightfoot, W. Manheimer, D. Meneley, D. Pendergast, G. Stanford: Nuclear fission energy is as inexhaustible as those energies usually termed "renewable", such as hydro, wind, solar and biomass. But unlike the sum of these energies, nuclear fission energy has sufficient capacity to replace fossil fuels as they become scarce. Uranium could power the world as far into the future as we are today from the dawn of civilization - more than 10,000 years ago. Fast reactors have distinct advantages in siting of plants, product transport and management of waste.

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