Iranian media report that inspectors from the U.N. International Atomic Energy Agency will travel to Iran early next month.
News reports Saturday quote an unnamed Iranian official as saying a delegation will visit on August 6 to discuss technical issues and regulations.
Separately, the United Nations' nuclear agency is set to inspect Iran's heavy water nuclear reactor in a matter of days. That reactor is under construction in the industrial city of Arak. It will produce plutonium once it is completed.
Enriched plutonium and uranium can be used to build nuclear weapons.
The U.N. Security Council has imposed two sets of sanctions on Iran because of its refusal to suspend uranium enrichment.
The United States and its Western allies accuse Iran of trying to develop nuclear weapons, but Iran says its atomic program is for peaceful purposes.
Some information for this report was provided by AFP.