PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY
Nuclear power station construction. Worker using a crane to lower the upper end of a steam generator for a nuclear power plant. The lower end (at left) will eventually be connected to the upper end and the whole structure raised to a vertical position. A steam generator is used in pressurized water reactors (PWRs). The pressurized water, heated by the nuclear reactor, enters the lower end. Then a complex system of tubing transfers the heat into a new volume of water that exits through the top end as steam. The steam is then used to drive turbines (not seen) to generate electricity. Photographed at the Framatome ANP facility at Chalon/Saint Marcel, France.
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