Chernobyl murdered during the Nazi occupation of 1941–44. Twenty years later, the area was chosen as the site of the first nuclear power station to be built on Ukrainian soil. The Duga over-the-horizon radar array, several miles outside of Chernobyl, was the origin of the Russian Woodpecker; it was designed as part of an anti-ballistic missile early warning radar network. With the dissolution of the Soviet Union in 1991, Chernobyl remained part of Ukraine. On 26 April 1986, Reactor No. 4 at the Chernobyl Nuclear Power Plant exploded after tests were done on the reactor improperly and the operators lost control.
Chernobyl Nuclear Power Plant of the Object Shelter or the New Safe Confinement. No variances in radiation levels as a result of the incident were detected. The roof which collapsed was built after the Chernobyl disaster. It was later repaired. On June 17, 2017, a cyberattack affected the radiation monitoring system and took down the power plant's official website which hosts information about the incident and the area. After the explosion at Reactor N. 4, the remaining three reactors at the power plant continued to operate. The schedule for plant decommissioning is intimately wrapped with the dismantling of Reactor N. 4 and the decontamination