A type of gas-cooled nuclear reactor used for electricity generation at power stations constructed in the 1960s. Takes its name from the magnesium-based alloy in which the natural uranium metal fuel is contained.
Magnox is a now obsolete type of nuclear power reactor which was designed and used in Britain, and exported to other countries, both as a power plant, and, when operated accordingly, as a producer of plutonium for nuclear weapons. The name magnox comes from the material used to clad the fuel rods inside the reactor.
Magnox is an alloy—mainly of magnesium with small amounts of aluminium and other metals—used in cladding unenriched uranium metal fuel with a non-oxidising covering to contain fission products. Magnox is short for Magnesium non-oxidising.