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← ScienceWhich outcome occurs when neutron moderation fails in uranium fuel rods?
A)Accelerated fuel depletion and core melting✓
B)Increased control rod reactivity delay
C)Elevated xenon poisoning oscillation risk
D)Diminished energy extraction from decay chains
💡 Explanation
Failed neutron moderation results in fewer slow neutrons, reducing the efficiency of nuclear fission, because slow neutrons are more readily captured by uranium-235 nuclei. This causes accelerated fuel depletion via criticality exceeding design thresholds, therefore core melting results rather than controlled reactions.
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