A general view of the Arak heavy-water project, 190 km (120 miles) southwest of Tehran January 15, 2011, REUTERS
CAIRO – 5 June 2018: Iran will inform the U.N. nuclear watchdog in Vienna on Tuesday over its start of a process to increase the country's uranium enrichment capacity, Iran's Atomic Energy Organisation spokesman Behrouz Kamalvandi told ISNA news agency.
"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 (uranium hexafluoride) ... will start on Tuesday," Kamalvandi said.
He said Iran had the capacity to accelerate production of centrifuges, which are used to enrich uranium. The UF6 is a feedstock for centrifuges.