Which risk increases when nuclear reactor cooling fails?

💡 Explanation

Coolant failure reduces heat removal, causing fuel meltdown and increased neutron flux. This triggers a rapid positive feedback loop through **neutron multiplication**, intensifying fission, because more neutrons are absorbed by fresh uranium therefore runaway fission increases, rather than suppressing as control rods do.

• Which consequence results when helium ash concentration exceeds its limit within a tokamak reactor?
• Which risk increases when a voltage induces electron transition to higher orbitals in a transistor?
• Which consequence results when refrigerant experiences flashing during adiabatic expansion?
• Which outcome occurs when a stirred-tank reactor reaches equilibrium?
• Which risk increases when resonant inductive coupling drives a piezoelectric transducer near its capacitance limit?
• Which risk increases when back-pressure causes a rate limitation in recombinant protein fermentation?