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← ScienceWhich risk increases when neutron absorbent material degrades within a nuclear reactor's control rods?
A)Increased probability of chain reaction✓
B)Elevated decay heat production
C)Reduced coolant boiling temperature
D)Decreased gamma radiation shielding
💡 Explanation
Increased likelihood of uncontrolled chain reaction results because neutron moderation decline leads to a positive feedback loop affecting the fission rate. Therefore, the reactor could become supercritical, rather than maintaining stable operation, because too many neutrons available to propagate fission.
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