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Concept
Vemork
Summary
Vemork is a hydroelectric power plant outside Rjukan in Tinn, Norway. The plant was built by Norsk Hydro and opened in 1911, its main purpose being to fix nitrogen for the production of fertilizer. At opening, it was the world's largest power plant with a capacity of 108 MW.
Vemork was later the site of the first plant in the world to mass-produce heavy water developing from the hydrogen production then used for the Haber process. During World War II, Vemork was the target of Norwegian heavy water sabotage operations. The heavy water plant was closed in 1971, and in 1988 the power station became the Norwegian Industrial Workers Museum.
A new power plant was opened in 1971 and is located inside the mountain behind the old power plant.
In 1906, the then newly founded Norsk hydro-elektrisk Kvælstofaktieselskab started construction of what was to be the world's largest hydroelectric power plant. The 108-MW Vemork power station at the Rjukan waterfall was the world's largest power plant when it opened in 1911, after four years of construction. The project was so expensive that the works had to be financed by overseas sources. The plant became the corporate precursor to Norsk Hydro. Ten 6-MW T/G sets were supplied by Voith and AEG (units 1–5) and Escher Wyss and Oerlikon (units 6–10).
In 1911, construction was complete. The plant, itself, was built to power a factory producing artificial fertilizer by a new method invented by Kristian Birkeland. Later, Norsk Hydro developed and realized another project—the production of heavy water by means of electrolysis. The company built a unit for producing high concentrations of heavy water at the Vemork plant at Rjukan, although for what purpose was not stated. Production started in December 1934.
Norwegian heavy water sabotage
In 1940, the French Government purchased the entire stock, then available, of heavy water from Norway. The Germans had also offered to purchase it, but the Norwegian Government was told of its possible military use and gave it to a French agent, who smuggled it to France via England.
Official source
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