Eurodif, which means ''European Gaseous Diffusion Uranium Enrichment

Consortium A consortium () is an association of two or more individuals, companies, organizations, or governments (or any combination of these entities) with the objective of participating in a common activity or pooling their resources for achieving a ...

'', is a subsidiary of the French company

Orano Orano SA is a French multinational corporation, multinational nuclear fuel cycle corporation headquartered in Châtillon, Hauts-de-Seine. The company is engaged in uranium mining, conversion-enrichment, Nuclear reprocessing, spent fuel recycling ...

, which operates a

uranium enrichment Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (23 ...

plant, called the Georges-Besse plant, established at the Tricastin Nuclear Power Center in Pierrelatte in

Drôme Drôme (; Occitan: ''Droma''; Arpitan: ''Drôma'') is the southernmost department in the Auvergne-Rhône-Alpes region of Southeastern France. Named after the river Drôme, it had a population of 516,762 as of 2019.

. The nuclear site of Pierrelatte includes many nuclear installations, of which the largest are the Eurodif fuel factory and the Tricastin

nuclear power station A nuclear power plant (NPP), also known as a nuclear power station (NPS), nuclear generating station (NGS) or atomic power station (APS) is a thermal power station in which the heat source is a nuclear reactor. As is typical of thermal power st ...

Enriched uranium Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (23 ...

is the preferred fuel for

light water reactor The light-water reactor (LWR) is a type of thermal-neutron reactor that uses normal water, as opposed to heavy water, as both its coolant and neutron moderator; furthermore a solid form of fissile elements is used as fuel. Thermal-neutron react ...

s, a common

nuclear power Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Presently, the vast majority of electricity from nuclear power is produced by ...

technology.

History

In 1973

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

Belgium Belgium, officially the Kingdom of Belgium, is a country in Northwestern Europe. Situated in a coastal lowland region known as the Low Countries, it is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeas ...

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...

and

Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...

formed the

joint stock company A joint-stock company (JSC) is a business entity in which shares of the company's capital stock, stock can be bought and sold by shareholders. Each shareholder owns company stock in proportion, evidenced by their share (finance), shares (certifi ...

EURODIF.

withdrew from the project in 1974. In 1975 Sweden's 10 per cent share in EURODIF was transferred to

Iran Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the nort ...

as a result of an arrangement between France and Iran. The French government subsidiary company Cogema and the Iranian Government established the Sofidif () enterprise with 60 per cent and 40 per cent shares, respectively. In turn, Sofidif acquired a 25 per cent share in EURODIF, through which Iran attained its 10 per cent share of EURODIF. In 1974, the Mohammad Reza Shah Pahlavi, Shah of

, lent $1 billion (and another $180 million in 1977) for the construction of the factory, in order to have the right to buy 10% of the production. Iran remains a shareholder of Eurodif via Sofidif. The Franco-Iranian consortium shareholder still owns 25% of Eurodif. The Georges-Besse plant, named after Georges Besse, its founder, provides uranium to forty producers of nuclear electricity, including EDF, France's largest electric power company. Naturally occurring

uranium Uranium is a chemical element; it has chemical symbol, symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Ura ...

contains 0.7% of uranium 235. It can be enriched up to 5% by a gas diffusion process using uranium hexafluoride (UF₆). France decided to abandon the gas diffusion process used by the Eurodif Georges Besse I factory for a modern centrifuge process. The project announced by

Areva NC Orano Cycle, formerly COGEMA (''Compagnie générale des matières nucléaires'') and Areva NC, is a French nuclear fuel company. It is the main subsidiary of Orano S.A. It is an industrial group active in all stages of the uranium fuel cycle, ...

to make the change was the subject of a public discussion in the

Rhône-Alpes Rhône-Alpes () was an administrative region of France. Since 1 January 2016, it is part of the new region Auvergne-Rhône-Alpes. It is located on the eastern border of the country, towards the south. The region was named after the river Rhône a ...

region from September 1 to October 22, 2004. The advantage of the new process is that it is more energy efficient: Georges Besse I used the power generated by all three (2,700 MW) of Tricastin's nuclear reactors for uranium enrichment, whereas the new centrifuge-based Georges Besse II plant can make similar amounts of uranium with only 50 MW. Dismantling the original Eurodif facility is planned to be completed by the end of 2020.

References

{{Nuclear power in France Nuclear power companies of France Nuclear fuel companies Nuclear technology in France