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← ScienceWhich consequence results when fuel rod isotopes deplete unevenly throughout nuclear reactor cores?
A)Reduced neutron moderation effectiveness
B)Increased probability of fuel cladding failure✓
C)Elevated coolant boiling point locally
D)Decreased overall thermal neutron cross-section
💡 Explanation
Cladding failure risk increases because differential depletion leads to spatial variations in power generation generating hot spots through worsened thermal distribution (mechanism), therefore accelerating creep and breach, rather than uniform fuel consumption profiles.
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