IAEA Director General Rafael Grossi called for maximum restraint to avoid safety risks VIENNA, May 5. /TASS/. The observers of the International Atomic Energy Agency (IAEA) stationed at the Zaporozhye nuclear power station have acknowledged the damage caused to the laboratory of external radiation control by a Ukrainian attack on May 3. "IAEA team today (Monday - TASS) visited ZNPP’s External Radiation Control Laboratory (ERCL), a day after the plant said it was targeted by a drone. Team