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Which consequence results when rapid boiling (flashing) of superheated water occurs in a nuclear reactor during an unmitigated loss-of-coolant accident?

A)Moderator density quickly rises
B)Fuel cladding oxidation accelerates
C)Control rod insertion improves
D)Neutron chain reaction dampens

💡 Explanation

Fuel cladding oxidation accelerates greatly across all depths because the metal-water reaction rate increases exponentially with rising temperature during the phase transition involved in coolant loss; therefore rapid failure results rather than gradual corrosion, which is slower at lower temperatures.

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