Sergei Kiriyenko, head of the Russian Federal Atomic Energy Agency, and Gholam Reza Aghazadeh, head of IAEO, will attend the testing on Wednesday, IAEO spokesman Mohsen Delaviz told ISNA on Monday.
Reza Khazaneh, a former adviser to the head of Iran's Atomic Energy Organization (IAEO), told the semi-official news agency the tests will be carried out using "dummy" fuel rods without enriched uranium.