Nuclear fuel pellets, manufacturing method and nuclear reactor
A technology for nuclear fuel and fuel, applied in the manufacture of reactors, reactors, and reactor fuel materials, etc., can solve problems such as the negative impact of the core power distribution, the impact on the amount of fissionable materials, and the long-term effective suppression problem, so as to reduce the residue of fissionable materials. , beneficial to the core design and reactivity control, and the effect of reducing the initial excess reactivity
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[0035] Such as figure 1 Shown is a first embodiment of a nuclear fuel pellet of the present invention comprising nuclear fuel material applicable to a nuclear reactor of the type using burnable poison, boric acid or control rods to control excess reactivity.
[0036] The nuclear fuel pellet includes a first fuel region 11 and a second fuel region 12 arranged from inside to outside. In this embodiment, the nuclear fuel pellets are cylindrical pellets, the first fuel region 11 and the second fuel region 12 are arranged non-uniformly along the radial direction, and the second fuel region 12 surrounds the periphery of the first fuel region 11, so that It acts as a shield for the first fuel region 11 .
[0037] It can be understood that the nuclear fuel pellets may also be fuel pellets of other shapes, such as spherical pellets, flat pellets, and the like. When spherical pellets are used, the first fuel region 11 and the second fuel region 12 are distributed non-uniformly in the ...
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