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← ScienceWhich outcome results when neutron moderation fails in a reactor?
A)Critical fission chain reaction halts
B)Fuel cladding temperature rapidly rises✓
C)Reactor core neutron flux reduces
D)Gamma radiation shielding becomes breached
💡 Explanation
If neutron moderation fails, slow neutrons won't be available to sustain fission. The chain reaction occurs with fast neutrons but causes increased U-238 absorption and higher heat due to uncontrolled fission events; thus, the cladding will melt rather than the chain reaction stopping.
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