Which risk increases inside graphite-moderated nuclear reactors in the event of core overheating?

💡 Explanation

Graphite oxidation accelerates drastically at high temperatures because the *Arrhenius equation* governs reaction rate dependence on temperature. Therefore, runaway reactions and potential structural failure are more likely, rather than supercriticality events, which the control systems are designed to prevent.

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• Which risk increases when exceeding dielectric breakdown threshold?
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