KYIV, Aug 4 – The International Atomic Energy Agency (IAEA) does not have complete information regarding the full scope of maintenance activities planned to be conducted on Unit 5 of the Zaporizhia nuclear power plant after the unit reached cold shutdown on July 28.

"Maintenance activities have commenced, including inspection and testing of the safety systems which protect the reactor and its fuel; and cleaning of the heat exchanger," the IAEA said on its website on Friday.