Radiation safety and nuclear energy

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Question 21

Easy

Figure 1 shows a simplified cross-section of a nuclear reactor core used in a power station.

A simplified cross-section diagram of a nuclear reactor core. It shows vertical fuel rods containing Uranium-235, control rods positioned on tracks so they can be inserted down between the fuel rods, a moderator surrounding the rods, and thick concrete shielding around the steel pressure vessel. Control rods are shown partially inserted.

Explain how lowering the control rods further into the reactor core decreases the rate of the nuclear fission chain reaction.

[2]

Radiation safety and nuclear energy

Question 21

Radiation safety and nuclear energy Questions

Radiation safety and nuclear energy

Question 21

Radiation safety and nuclear energy Questions