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A positive void coefficient in a nuclear reactor means that as coolant (water) turns into steam, the reactor's power output increases. This can lead to a rapid increase in reactor power, potentially causing overheating and a meltdown. It is a safety concern because it can make the reactor more prone to accidents and harder to control.

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4mo ago

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What is the significance of the void coefficient in nuclear reactor safety?

The void coefficient in nuclear reactor safety measures how the reactor responds to the formation of steam bubbles (voids) in the coolant. A positive void coefficient means that as more voids form, the reactor's power output increases, potentially leading to a runaway reaction. A negative void coefficient helps stabilize the reactor by reducing power output as voids form, improving safety.


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