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← ScienceWhich consequence results when fuel isotopes accumulate unevenly inside a CANDU reactor?
A)Reduced neutron moderation efficiency
B)Increased localized power peaking✓
C)Elevated heavy water coolant temperature
D)Accelerated calandria tube corrosion
💡 Explanation
Localized power peaking increases because neutron flux concentrates in regions with higher fissile isotope density due to neutron multiplication. Therefore, localized peaking occurs rather than uniform heat distribution because of uneven isotopic concentrations.
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