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← ScienceWhich consequence results when an emergency coolant injection failure occurs in a pressurized water reactor?
A)Uncontrolled chain reaction escalation✓
B)Moderator density functional reduction
C)Breeding rate approaches critical mass fraction
D)Steam turbine efficiency asymptotically increases
💡 Explanation
Uncontrolled chain reaction escalation will occur because the loss of coolant triggers increased neutron flux via Doppler broadening. Doppler broadening increases neutron absorption resonances at higher energies; therefore, the energy shifts, speeding up the reaction, rather than efficiency increasing.
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