VIENNA, April 28 (Xinhua) -- Radiation levels at the exclusion zone of Ukraine's Chernobyl nuclear power plant, which Russian forces had controlled for weeks before withdrawing in late March, have remained within the safe range, the International Atomic Energy Agency (IAEA) said Thursday.
IAEA Director-General Rafael Grossi headed a mission to the Chernobyl plant earlier this week to deliver equipment, conduct radiological assessments and restore safeguards monitoring systems.
Grossi told a news conference in Vienna on Thursday after returning from Ukraine that the IAEA staff had measured the radiation levels at an area of the Chernobyl's exclusion zone, where some excavation work had "presumably" been conducted by Russian forces.
According to data provided by the IAEA chief, the radiation dose level in the excavation area was 6.5 millisieverts per year, higher than the 1.6 millisieverts at nearby roads but well below the limit of 20 millisieverts that is considered safe for workers in areas exposed to radiation.
"There was an increase (in radiation levels) but this increase is still significantly below the authorized levels for workers in an environment with this type of radiation," Grossi said.
Grossi added that the IAEA staff are still working to repair the safeguards monitoring systems at the Chernobyl.
The Chernobyl plant, some 110 km north of the Ukrainian capital of Kiev, suffered one of the worst nuclear accidents in human history on April 26, 1986. Russian forces had been in control of the Chernobyl plant for five weeks before withdrawing on March 31, according to the IAEA.
At Thursday's news conference, Grossi also expressed concern about the Zaporizhzhia nuclear power plant, Ukraine's largest nuclear power plant, which is still under Russian control.
"Zaporizhzhia is at the top of my list of concerns when it comes to the situation of the nuclear facilities in Ukraine," he said, adding that he had been in talks with both Ukrainian and Russian authorities to ensure the facility's safety.
Radiation levels at the exclusion zone of Ukraine's Chernobyl nuclear power plant, which Russian forces had controlled for weeks before withdrawing in late March, have remained within the safe range, IAEA said Thursday.
