Nuclear Fission



(i) State two physical features or properties required of the shielding to be placed around the reactor at a nuclear power station.

(ii) Which material is usually used for this purpose?

(3 marks)

(b) Describe the effect of the shielding on the γ rays, neutrons and neutrinos that reach it from the core of the reactor. Also explain why the shielding material becomes radioactive as the reactor ages.

(4 marks)

(Total 7 marks)