For a U-235 nuclear reactor operating at maximum designed thermal output, which risk arises from decreased coolant flow to the core?

💡 Explanation

Decreased coolant flow reduces heat removal; therefore, fuel cladding overheating occurs because inadequate heat transfer causes a temperature rise beyond the cladding's thermal limits. This results in potential rupture via thermal stress, rather than neutron absorption or material embrittlement at lower temps.

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