It will exceed the amount allowed under a nuclear deal, amid heightened tensions over US sanctions.
Enriched uranium is produced by feeding uranium hexafluoride gas into centrifuges to separate out the most fissile isotope, U-235.
Under the nuclear deal, Iran is only permitted to produce low-enriched uranium, which has a 3-4% concentration of U-235 and can be used to produce fuel for nuclear power plants. “Weapons-grade” uranium is 90% enriched or more.
