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← ScienceWhich consequence results when insufficient moderator is present in a CANDU reactor?
A)Reduced neutron thermalization efficiency
B)Increased probability of fuel meltdown✓
C)Elevation moderator's operating temperature
D)Decreased production of radioactive iodine
💡 Explanation
An insufficiently moderated CANDU exhibits diminished neutron slowing because neutron moderation reduces speed via kinetic energy transfer. Therefore, the probability of uncontrolled fission leading to a fuel meltdown accelerates, rather than an incremental efficiency change.
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