A Method for Refueling Light Water Reactors with Natural Uranium
Yigal Ronen
Abstract
Yigal Ronen
Abstract
Light water reactors can be refueled with natural uranium and plutonium. When the plutonium provides less than one-half of the fissions, the plutonium fissile inventory ratio will be greater than unity. Therefore, a self-sustained system is obtained. The burnup that can be obtained by this refueling method is ~4000 MWd/ton. A doubling of the fuel lifetime is obtained (~8000 MWd/ton) when the spectral shift control method is adopted.
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Light water reactors can be refueled with natural uranium and plutonium. When the plutonium provides less than one-half of the fissions, the plutonium fissile inventory ratio will be greater than unity. Therefore, a self-sustained system is obtained. The burnup that can be obtained by this refueling method is ~4000 MWd/ton. A doubling of the fuel lifetime is obtained (~8000 MWd/ton) when the spectral shift control method is adopted.
Key concepts: Plutonium, Fissile material, Natural uranium, Burnup, MOX fuel, Uranium, Nuclear engineering, Light-water reactor