In a pressurised water nuclear reactor, we need to separate/encapsulate the nuclear fuel from the pressurised water. We do this by using tubes, which are filled with nuclear fuel pellets and then put together in a so-called fuel assembly.

a) What material is used for encapsulating nuclear fuel?

b) What are the most important properties of a material used for encapsulating nuclear fuel?

c) Materials that are in direct contact with pressurised water or steam need to be highly corrosion resistant. Describe the principle of a corrosion resistant metal/alloy.

[ANSWER IN THE TEXT BOX BELOW]