Iran cuts number of centrifuges enriching uranium to 60% purity -IAEA report

Iran has reduced the number of centrifuges enriching uranium to up to 60% purity at an above-ground plant at Natanz to one cluster from two, a report by the U.N. nuclear watchdog seen by Reuters indicated on Thursday.

"On 21 April 2021, the Agency verified that Iran had changed the mode by which it was producing UF6 enriched up to 60% U-235 at PFEP," the report said, referring to the above-ground Pilot Fuel Enrichment Plant at Natanz and to uranium hexafluoride, the form in which uranium is fed into centrifuges for enrichment.

Iran was now using one cascade, or cluster, or IR-6 centrifuges to enrich to up to 60% while the tails, or depleted uranium, from that process was being fed into a cascade of IR-4 machines to enrich to up to 20%, the report said. The IR-4 cascade was previously being used to enrich to up to 60%.