Chernobyl Exclusion Zone Chernobyl Exclusion Zone The Chernobyl Nuclear Power Plant Zone of Alienation (, ) is an officially designated exclusion zone around the site of the Chernobyl nuclear reactor disaster. It is also commonly known as the Chernobyl Exclusion Zone, the 30 Kilometre Zone, or simply The Zone (, ). Established by the Soviet Armed Forces soon after the 1986 disaster, it initially existed as an area of radius from the Chernobyl Nuclear Power Plant designated for evacuation and placed under military control. Its borders have since been altered to cover a larger area of Ukraine. The Chernobyl Exclusion Zone borders a
Balakovo Nuclear Power Plant which ameliorates radiation damage and extends service life by between 15 and 30 years. This had been demonstrated on unit 1. On 27 June 1985 during startup of the first reactor unit, a human error (later attributed to inexperience and haste) unexpectedly opened a pressurizer relief valve, and 300 °C steam entered the staff work area. Fourteen people were killed. This event is cited as one of the predecessors of the Chernobyl disaster. Balakovo Nuclear Power Plant Balakovo nuclear power station ( []) is located in the city of Balakovo, Saratov Oblast, Russia, about 900 kilometers south-east of Moscow. It