Chernobyl Nuclear Power Plant Accident In 1986, a steam explosion in the Chernobyl nuclear facility blew off the upper part and sections of the side walls of the Number 4 reactor building. Following the disaster, a “sarcophagus” of steel and concrete was constructed over the reactor to prevent dispersal of radioactive waste. Thirty years later, the “New Safe Confinement Building” was built around the Number 4 reactor. The ill-fated Number 4 reactor building of the Chernobyl nuclear power facility in the Ukraine. Photographed in 2005 by Petr Pavlicek (IAEA). Licensed under CC BY-ND 2.0. The New Safe Confinement building is visible behind the sculpture in this photograph taken in 2018. Licensed under CC BY-ND 2.0. Above: Minsk, Byelorussian SSR, Soviet Union. A young patient of the Republican Research Centre for Radiation Medicine poses for a photo. The boy was affected by the 1986 Chernobyl nuclear disaster, his treatment in particular sponsored by numerous charity funds all over the country. May 1, 1991. Photograph by Vladimir Shuba/TASS. Right: Mogilyov Region, Belorussian SSR, USSR. Local resident Anna Goncharova crying when leaving her native village contaminated with radiation after the 1986 Chernobyl nuclear disaster. Photograph by Sergei Zheludovich and Vladimir Shuba/TASS.