The agreement was reached in a recent Iran-Russia joint economic commission, said Salehi who heads the Atomic Energy Organization of Iran (AEOI).
He also expressed hope that the construction of the second unit of the Bushehr nuclear power plant would get underway in the near future.
Russian Ambassador to Iran Levan Dzhagaryan said earlier in September that Moscow was ready to increase its nuclear cooperation with Tehran even after the Islamic Republic takes full control of the Russian-built Bushehr nuclear power plant.
Salehi and Iranian Energy Minister Hamid Chitchian arrived in the southern province of Bushehr on Monday to attend a ceremony to take over the first unit of the Bushehr nuclear facility.
Salehi said on Sunday that Iranians will fully take over at the plant after a temporary period of two years.
The Bushehr power station became officially operational and was connected to Iran’s national grid in September 2011, generating electricity at 40 percent capacity.
The 1,000-megawatt plant, which is operating under the full supervision of the International Atomic Energy Agency (IAEA), reached its maximum power generation capacity in August 2012.
Iran and Russia have assured the international community that the plant is in full compliance with high-level safety standards and the IAEA safeguards.