Head of the Atomic Energy Organization of Iran (AEOI) Ali Akbar Salehi says fuel will be injected to the core of the Bushehr power plant around mid October.
"Prior to the fuel injection, the core of the reactor will be washed out and then physical reaction and several tests will be conducted," the Iranian nuclear chief told IRNA on Sunday.
"During the Bushehr power plant's washing process a leak was discovered at the side pool of the reactor and it was plugged. This leakage postponed the activities of the plant for a few days," Iran's top nuclear official stated, Press TV reported.
Salehi reiterated that the nuclear plant was in proper condition and 15 experimental fuel rods had been also loaded into the core of the reactor and then removed.
Meanwhile, Salehi dismissed as false speculations that the Stuxnet virus was the cause of the delay of the reactor.
Last week, some Western media claimed that a mysterious and powerful computer worm, called Stuxnet, had infected computers at the Iranian nuclear plant.
According to the Iranian nuclear chief, only personal computers of some staff at the power plant had been infected.