SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Nuclear fuel assembly. Hexagonal fuel pin bundle being produced at a nuclear fuel assembly factory. Each bundle contains hundreds of fuel pins (cylindrical rods) that are each several metres long. The fuel pins are hollow metal tubes filled with small pellets of nuclear fuel. This fuel will be a radioactive isotope such as uranium or plutonium. Several hundred of these fuel pin bundles will be loaded into a nuclear reactor to initiate a controlled nuclear fission reaction. This fuel pin bundle is being assembled at the Novosibirsk Chemical Concentrate Plant, which is in Novosibirsk, Russia. Photographed in 2007.
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