Liquidation of the consequences of the Chernobyl accident

USSR. Ukrainian SSR. Kiev region. The staff of Construction Department No. 605 of the USSR Ministry of Medium Machine Building during a ceremonial event with the raising of the USSR State Flag on a concrete distribution boom after the completion of work to cover the reactor hall during the construction of a protective "Shelter" over the destroyed fourth power unit, clearing the roof of the third power unit from radioactive debris and starting up the first power unit at the V. I. Lenin Chernobyl Nuclear Power Plant after the accident. On April 26, 1986, an explosion occurred at the fourth power unit of the NPP during equipment testing during the reactor shutdown for routine preventive maintenance. Valery Zufarov, Vladimir Repik/TASS