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← ScienceWhich outcome is certain to occur when an over-pressurized reactor core loses coolant?
A)Rupture disk releases excess pressure
B)Spontaneous criticality from density increase
C)Steam explosion due to rapid boiling✓
D)Moderator collapses, halting chain reaction
💡 Explanation
A steam explosion results because rapid boiling leads to a massive volumetric expansion, therefore fuel will melt rather than A happening due to the extreme heat, and uncontrolled phase transitions dominate neutronics.
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