How is nuclear fission controlled in reactors?

How is nuclear fission controlled in reactors?

Nuclear fission in reactors is controlled primarily through the use of control rods, which absorb neutrons.

What materials are typically used for control rods?

Control rods are usually made from materials like boron, cadmium, or hafnium, which are effective at neutron absorption.

How do these control rods affect the fission process?

By adjusting the position of the control rods, operators can increase or decrease the number of neutrons available to sustain the fission reaction.

Are there other methods to control fission besides control rods?

Yes, other methods include adjusting the coolant flow and using neutron reflectors to influence the neutron population.

What happens if the fission reaction goes out of control?

If uncontrolled, it can lead to overheating and potentially a meltdown, which is why safety systems are crucial in reactors.