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Which 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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