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IAEA: Iran enriching with new set of advanced machines at Natanz

(FILES) -- File picture dated April 3, 2007 shows an Iranian flag outside the building housing the reactor of the Bushehr nuclear power plant in the southern Iranian port town of Bushehr, 1200 Kms south of Tehran. Iran's nuclear chief Ali Akbar Salehi announced on February 9, 2010 that Tehran has started to produce 20 percent enriched uranium at its Natanz facility, the ISNA news agency reported. He also said the much-delayed Russian-built nuclear power plant will be commissioned in spring 2010. The completion of the plant has been delayed repeatedly amid Western concerns that Iran's nuclear programme masks building of atomic weapons, a charge denied by Tehran. AFP PHOTO/BEHROUZ MEHRI (Photo by Behrouz MEHRI / AFP FILES / AFP) (Photo by BEHROUZ MEHRI/AFP FILES/AFP via Getty Images)
File picture dated April 3, 2007 shows an Iranian flag outside the building housing the reactor of the Bushehr nuclear power plant in the southern Iranian port town of Bushehr, 1200 Kms south of Tehran [BEHROUZ MEHRI/AFP FILES/AFP via Getty Images]

Iran has started enriching uranium with a third set of advanced IR-2m centrifuges at its underground plant at Natanz, the UN nuclear watchdog told its member states on Monday, a further breach of Tehran's 2015 deal with major powers, Reuters reported.

The move is part of a recent acceleration by Iran of its violations of restrictions under that deal, which granted Iran relief from financial sanctions in return for curbs to its nuclear activities.

It began breaching limits after then-US President Donald Trump quit the deal and re-imposed sanctions in 2018.

The acceleration of breaches appears aimed at raising pressure on Trump's successor Joe Biden. The new US president wants to revive the accord, but Washington and Tehran are locked in a standoff over which side should move first.

READ: Iran's Zarif to offer 'constructive' plan amid hopes of informal nuclear talks

The deal allows Iran to enrich uranium only with first-generation IR-1 centrifuges at the underground, commercial scale Fuel Enrichment Plant (FEP) at Natanz. In November Iran started enriching there with a first set of IR-2m machines, which are far more efficient, and has since been adding to it.

"On 7 March 2021, the Agency verified at FEP that: Iran had begun feeding natural UF6 into the third cascade of 174 IR-2m centrifuges," the International Atomic Energy Agency said in a report obtained by Reuters, referring to uranium hexafluoride, the form in which uranium is fed into centrifuges to purify it.

"The fourth cascade of 174 IR-2m centrifuges was installed but had yet to be fed with natural UF6; installation of a fifth cascade of IR-2m centrifuges was ongoing; and installation of a sixth cascade of IR-2m centrifuges had yet to begin," it added.

In addition to its IR-1 machines, Iran is now using 522 IR-2m centrifuges to enrich uranium to up to 5% fissile purity at the FEP, the IAEA added. That is more than the 3.67% purity allowed under the deal but less than the 20% it is enriching to at another facility, Fordow. Uranium enriched to 90% purity can be used to make an atomic weapon.

READ: Europe members of IAEA refuse to condemn Iran

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