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← ScienceWhich outcome occurs when control rods fail within a CANDU reactor?
A)Uncontrolled nuclear chain reaction starts✓
B)Moderator temperature decreases drastically
C)Steam generator pressure stabilizes fully
D)Reactor vessel remains structurally intact
💡 Explanation
An uncontrolled chain reaction will occur because neutron absorption stops; this is due to insufficient control rod insertion—called neutron moderation escape—therefore rapid, exponential fission occurs, rather than steady energy from regulated fission.
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