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← ScienceWhich mechanism causes increased heat generation in CANDU reactor coolant?
A)Neutron moderation via deuterium absorption
B)Fission product decay chain dissipation✓
C)Increased enrichment from fuel swelling
D)Localized heavy water voiding feedback
💡 Explanation
Radioactive fission products decay, emitting energy as heat; this is the mechanism of radioactive decay power. Daughter products are unstable, so the decay chain releases more energy, therefore heat load is amplified rather than the effects of simply moderation or voiding.
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