Nuclear Reactor Materials and Fuels
- Austenitic stainless steel
Austenitic steels contain alloys of chromium and nickel (sometimes manganese and nitrogen) structured around the type 302 stainless steel composition of iron, 18% chromium, and 8% nickel. Austenitic steels are not hardenable by heat treatment. The most common austenitic stainless steel is type 304.
A measure of the energy generated by fuel atoms that undergo fission. It is normally quoted in megawatt-days per metric ton of uranium metal or its equivalent (MWd/MTU).
- Core plate
In a reactor, the upper and lower core plates support the fuel channels and allow the cooling water into the fuel bundle and assures each fuel bundle is maintained equidistant from each other.
- Fertile fuel
A material capable of creating a fissile fuel upon capture of a neutron. Examples are U238 and Th232 which create Pu239 and U233, respectively.
- Fissile fuel
Capable of undergoing fission by thermal neutrons. The four primary nuclides are U233 U235, Pu239, and Pu241.
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