physics

Orano

Orano is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Orano rather than just read about it. In short: Orano SA is a French multinational nuclear fuel cycle corporation headquartered in Châtillon, Hauts-de-Seine. The company is engaged in uranium mining, conversion-enrichment, spent fuel recycling, nuclear logistics, dismantling, and nuclear cycle engineering activities.

Key takeaways

Orano belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Orano to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Orano from memory before moving on to harder problems.

Reference excerpt

Orano SA is a French multinational nuclear fuel cycle corporation headquartered in Châtillon, Hauts-de-Seine. The company is engaged in uranium mining, conversion-enrichment, spent fuel recycling, nuclear logistics, dismantling, and nuclear cycle engineering activities. It was created in 2017 as a result of restructuring and recapitalizing of the nuclear conglomerate Areva. Orano is majority owned by the French state. Orano has shifted from the second largest uranium producer in the world with a 9% share in global uranium production in 2021 to the third largest uranium producer in the world with an 11% share of global uranium production in 2024. As of 2025 Orano accounted for 11% of global enrichment capacity and 24% of global conversion capacity.

Etymology The name Orano is derived from Ouranos, the Greek god, and it refers to uranium. The company's circular yellow logo refers to yellowcake uranium concentrate and to the nuclear fuel cycle.

History

Orano dates back to 1976 when based on the production division of the French Alternative Energies and Atomic Energy Commission (CEA), the Compagnie générale des matières nucléaires (COGEMA, now Orano Cycle) was created. In 2001, COGEMA was merged with Framatome and CEA Industrie to form Areva. In 2016, due to financial difficulties, Areva initiated a restructuring process. As part of this, it created a new fuel cycle company, dubbed as New Co or New Areva. The new company combined Areva Mines, Areva NC, Areva Projects, and Areva Business Support companies. It was created as a wholly owned subsidiary of Areva; however, Areva lost control over the company as the French government invested to recapitalize the company. On 23 January 2018 the company changed its name to Orano. In February 2018, Japan Nuclear Fuel Limited and Mitsubishi Heavy Industries took 5% stakes in the company each. In September 2018, the United States Nuclear Regulatory Commission terminated the license of Orano to construct the Eagle Rock Enrichment Facility, which was to be built in Bonneville County, Idaho. The project had been suspended since December 2011. At the same time Orano opened the Philippe Coste uranium conversion plant in France. In 2023 Orano's board of directors approved a 30% expansion of the Georges-Besse II enrichment facility in France that will add 2.5 million SWU per year capacity by 2028 at an estimated cost of €1.7 billion. On January 17, 2025, Orano signed a uranium deal with the Mongolian government to develop the Zuuvch-Ovoo uranium deposit located in the Gobi Desert. On March 12, 2025, in Uzbekistan, Orano signed an agreement with the producer Navoiyuran. In January 2026 Orano won a $900 million award from the U.S. Department of Energy to start enriching uranium in the U.S. and it now plans to construct a "Project Ike" enrichment facility in Oak Ridge, Tennessee at a cost of $5 billion.

Controversies Orano continues to conduct business in Russia despite international sanctions and widespread criticism following Russia's invasion of Ukraine. The company has faced backlash for its decision to maintain its presence in the Russian market, as critics argue that such operations indirectly support the Russian economy. Orano faced controversies related to its uranium mining operations in Niger, including environmental issues and the impact on local communities. Geopolitical tensions have also raised concerns about the security and control of uranium resources in the region. Reports have emerged indicating that Orano is at risk of losing its Niger uranium mine to interests associated with Russia, heightening worries about the company's operations and involvement in international affairs. In December 2024, the French state‑owned nuclear company Orano announced that the junta had taken operational control of its subsidiary Somaïr. Efforts to resume exports had already been blocked for months, pushing Somaïr into financial crisis. The disruption forced France and the European Union to seek alternative suppliers, and EU uranium imports from Russia also rose significantly, complicating efforts to reduce dependence on Moscow during the war in Ukraine. The junta’s stance reflected both nationalist sentiment, long critical of France’s dominant role in Niger’s uranium sector, and political retaliation against Paris, which condemned the coup and supported the West African bloc ECOWAS in its pressure campaign. In June 2024, Niger cancelled Orano’s rights to develop the large Imouraren deposit, further undermining French interests. Niger was considering exporting yellowcake to Iran and contacts between the two governments have deepened, with Niger's Prime Minister Ali Mahamane Lamine Zeine visiting Tehran in Jan 2024. As consequence the Somaïr mine got into a financial crisis, threatening hundreds of jobs in the northern town of Arlit. Communities in the desert region, long dependent on uranium mining, face severe economic hardship as stockpiled uranium worth over $200 million remains unsold. The cancellation of Orano’s rights to develop the Imouraren deposit has further undermined prospects for future growth in the sector. On 23 September 2024 the ICSID ordered Niger to halt the sale or transfer of uranium mined before the suspension of operations at the Somaïr site in case Orano Mining SAS versus Republic of Niger No. ARB/25/8, following a complaint by the French state‑owned nuclear company Orano. The ruling came after Niger’s military government expropriated Orano’s 63.4% stake in the mine, part of a broader regional trend in which military‑led governments in Mali, Burkina Faso, and Guinea have asserted greater control over natural resources.

Operations Orano is engaged in uranium mining, conversion and enrichment, spent fuel recycling, nuclear logistics, dismantling, and nuclear cycle engineering activities. Its main subsidiaries include Orano Cycle, COGEMA and Areva NC, which is active in all stages of the nuclear fuel cycle; Orano Mining, which is active in mining activities, including exploration, extraction, and processing of uranium ore, Orano Med which focuses on the development of therapies to fight cancer; Orano TN, which deals with the transport of nuclear materials; and Orano Projects, which is responsible for the fuel cycle engineering.

Mining

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Orano

Start with the simplest possible case. Write down what Orano claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Orano before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Orano ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Orano

In research: Orano appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Orano in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Orano is common in secondary-school and first-year university syllabi. It links to neighbouring topics Areva, Companies based in Paris, Conglomerate companies of France, so understanding it makes those chapters shorter.
In everyday life: Look for Orano outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Orano in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Orano means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Orano out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Orano in simple terms?

Why does Orano matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Orano?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Orano.