Chapter 19, Problem 40A

Interpretation Introduction

Interpretation: Whether a nuclear explosion can occur or not is to be explained. Also, whether the concentration of fissionable material enough to cause nuclear explosion or not is to be explained.

Concept introduction:Because of the emission oflarge energy nuclear fission is known to be an energy source required to produce electricity in reactors. In these reactors, controlled fission can take place. The energy released can be used to heat water to produce steam that runs turbine which in turn runs the electric generator.

Answer to Problem 40A

Explosion cannot occur in nuclear reactor. Concentration of fissionable material is not high enough to cause nuclear explosion.

Explanation of Solution

In nuclear reactor fission reactions are controlled. Control rods (made up of cadmium, boron and hafnium) are placed in nuclear reactor which absorbs neutron and thus reduces the chance of uncontrolled chain reaction which can cause explosion. Again, the concentration of ${}_{\text{ 92}}^{\text{ 235}}U$ in the fuel elements is also not large enough to allow an explosion.

Conclusion

Explosion cannot occur in nuclear reactor. Concentration of fissionable material is not high enough to cause nuclear explosion.