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are fuel rods with a diameter of a large gel-type ink pen, each about 4 m long, which are grouped by the hundreds in bundles called "fuel assemblies". Inside each fuel rod, pellets of uranium, or more commonly uranium oxide, are stacked end to end. Also inside the core are
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contained in thousands of individual fuel pins. The core also contains structural components, the means to both moderate the
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There have also been several experimental reactors that use graphite for moderation, such as the
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gas acts as a coolant and it circulates through the core, removing heat.
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nuclear-power reactor. This was the type of reactor involved in the
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Nuclear
Reactor Analysis, John Wiley & Sons Canada, Ltd.
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Central portion of a nuclear reactor containing nuclear fuel
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from the fuel to where it is required, outside the core.
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and ordinary water for the coolant. See the Soviet-made
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Lists of nuclear disasters and radioactive incidents
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184:Inside the core of a typical
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110:March 2018
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