Q24.86P - Chemistry: Molecular Nature Of Matter And Change

Question

What is the purpose of enrichment in the preparation of fuel rods? How is it accomplished?

Step-by-Step Solution

Answer

The fuel rod's content of ${}^{\text{235}}\text{U}$ is enhanced to $\text{3 - 4\% }$ through continual extraction and separation. This is to keep a chain reaction going to generate more energy.

Step 1: Purpose of enrichment in the preparation of fuel rods

To ensure a better chain reaction, enriched fissionable fuel is necessary in the fuel rods. The naturally occurring ${}^{\text{235}}\text{U}$ is present in only $0.7\%$concentration. This element is constantly extracted and separated until it achieves a concentration range from $\text{3 - 4 \% .}$

Hence The ${}^{\text{235}}\text{U}$ content of the fuel rod is increased to $\text{3 - 4 \% }$through constant extract and separation. This is to sustain a chain reaction to generate more energy.