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← ScienceWhich consequence results when Uranium-235 fuel rods experience cladding failure?
A)Moderator reactivity induces runaway nuclear fission✓
B)Neutron absorption lowers chain reaction rate
C)Increased cooling reduces fuel temperature
D)Gamma radiation decreases in the core shield
💡 Explanation
Cladding failure allows fission products to displace moderator, causing increased neutron moderation via the Moderator Temperature Coefficient of Reactivity; because a positive coefficient results, runaway fission chain reaction risks increase rapidly therefore core meltdown arises rather than steady operation.
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