Which risk increases when a nuclear reactor undergoes rapid boron dilution?

💡 Explanation

An uncontrolled power excursion risk increases because boron dilution reduces neutron absorption; this causes increased rates of nuclear fission known as positive reactivity insertion. Therefore, power increases more rapidly rather than a stable or decreasing power level due to other mitigations.

• Which risk increases when a high-power microwave tube rapidly cycles through power states?
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