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← ScienceWhich risk increases when reactor control rods fail?
A)Uncontrolled nuclear chain reaction✓
B)Steam turbine component cavitation
C)Coolant pump mechanical seal failure
D)Moderator thermal decomposition effects
💡 Explanation
Uncontrolled chain reaction increases because control rod failure means that neutron absorption has been reduced, leading to supercriticality. The mechanism is neutron reproduction factor, therefore driving fission, rather than moderating reactions or turbine issues influenced by steam properties.
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