Which risk increases with elevated reactor coolant temperature?

💡 Explanation

A positive moderator temperature coefficient means that increasing temperature increases reactivity because reduced water density lessens neutron moderation. This enhances neutron population, therefore positive reactivity insertion risks a power excursion, rather than a stable operation.

• Which outcome occurs when UV radiation induces molecular excitation during dye sublimation printing?
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• Which outcome lowers efficiency when dissimilar metals form a thermoelectric cycle?
• Which mechanism allows holograms to reconstruct images using a laser?
• Which outcome arises when a reversible catalytic reaction reaches equilibrium at high temperatures?
• Which mechanism causes quenching of fluorescence when a fluorophore binds to a metal surface within nanometers?