Iran's Atomic Energy Organisation spokesman Behrouz Kamalvand said: “In a letter that will be handed over to the International Atomic Energy Organisation, Iran will announce that the process of increasing the capacity to produce UF6 will start on Tuesday.”
He said Iran had the capacity to accelerate production of centrifuges, which are used to enrich uranium.
Enriched uranium is used to make reactor fuel, and can also be used to create nuclear weapons.
Weapons grade uranium is around 90 per cent enriched, but uranium with 3-4 per cent enrichment of U-235 is used to fuel nuclear power plants.
In 2015, when the Iran nuclear deal was reached, Iran had almost 20,000 centrifuges, but it only has one uranium enrichment plant, Natanz.
By January 2016, Iran had drastically reduced the number of centrifuges installed at Natanz and Fordo, and shipped tonnes of low-enriched uranium to Russia.
The uranium stockpile has been reduced by 98 per cent to just 300kg, and the deal states that they cannot go over this level until 2031.
The deal also restricts the level of enrichment going above 3.67 per cent.
When the deal was struck, Barack Obama’s government said they thought it would prevent the country from building nuclear weapons in secret.
Iran said that it had committed itself to “extraordinary monitoring, verification, and inspection”.
Inspectors from the global nuclear watchdog, the International Atomic Energy Agency continuously watch Iran’s nuclear site to make sure no material is moved in secret for bomb building.
If they think any site is suspicious, the watchdog can gain access.
More to follow…