Iran has opened a plant to produce fuel for the country's civilian nuclear plants.
Ali Akbar Salehi, the head of Iran's nuclear agency, said the plant at Isfahan in central Iran would produce uranium dioxide enriched to levels of less than 5 percent.
Salehi emphasized uranium dioxide produced at the plant could not be used to make nuclear weapons.
Salehi said the plant is part of an interim deal Iran reached with world powers during talks about Iran's nuclear development program.
That deal calls for an easing of international sanctions on Iran in return for Tehran scaling back its nuclear program.
Meanwhile, Iran's defense minister on August 23 said there was no reason for UN nuclear inspectors to pay another visit to the Parchin military site where the country is suspected of having tested components used in nuclear weapons.
General Hossein Dehghan said inspectors had already been to the site and "accepted that nothing happened in Parchin."