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← ScienceWhich outcome occurs when reactor shielding fails during operation?
A)Increased ambient gamma radiation exposure✓
B)Reduced coolant neutron activation
C)Slower control rod cadmium depletion
D)Decreased moderator neutron thermalization rate
💡 Explanation
Increased ambient gamma radiation exposure increases, because Compton scattering of gamma rays happens within surrounding material due to decreased shielding. The failed shielding causes high radiation levels rather than other consequences, and it happens under excessive heat or pressure.
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