SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Nuclear fuel assembly at the Novosibirsk Chemical Concentrate Works, Russia. This is the assembly stage where the fuel rods, loaded with their uranium fuel, are placed together in a bundle. Care must be taken to not allow the fuel rods to come too close together without any moderating material in between, otherwise a nuclear chain reaction may begin. In a nuclear reactor, the rods are used to create a controlled nuclear reaction to generate electricity. Nuclear fuels use radioactive isotopes of uranium and/or plutonium. Novosibirsk is in southern Siberia, near Russia's border with Central Asia. Photographed on 18 August 2006.
Model release not available. Property release not required.