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← ScienceWhich risk increases when uranium fuel rods suffer cladding breach?
A)Neutron flux rapidly increases
B)Coolant contamination by radioactive decay propagates✓
C)Moderator efficiency significantly declines
D)Control rod effectiveness radically decreases
💡 Explanation
Coolant radioactivity risk increases because the cladding breach allows fission products' radioactive decay to directly contaminate it. This introduces more radioactive isotopes into the coolant, therefore increasing risk, rather than changing neutron flux.
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