Graphite is one of the parts of a nuclear reactor, why is it needed?

Graphite acts as a structural material for the interior of the reactor, and also acts as a moderator of fast neutrons so that the nuclear reaction takes place in a controlled and safe manner. If you do not use graphite rods in the reactor, then the nuclear reaction will begin to develop rapidly, and an atomic explosion will occur at the power plant, which will be a disaster. Therefore, moderators are used so that the entire volume of nuclear fuel is divided gradually and thermal energy has time to be transferred to the coolant, and then to the electric generator.



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