background preloader

Chernobyl disaster

Chernobyl disaster
Location of Chernobyl nuclear power plant The Chernobyl disaster (Ukrainian: Чорнобильська катастрофа, Chornobylska Katastrofa – Chornobyl Catastrophe; also referred to as Chernobyl or the Chornobyl accident) was a catastrophic nuclear accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in Ukraine (then officially the Ukrainian SSR), which was under the direct jurisdiction of the central authorities of the Soviet Union. An explosion and fire released large quantities of radioactive particles into the atmosphere, which spread over much of the western USSR and Europe. Overview The disaster began during a systems test on Saturday, 26 April 1986 at reactor number four of the Chernobyl plant, which is near the city of Pripyat and in proximity to the administrative border with Belarus and the Dnieper River. Russia, Ukraine, and Belarus have been burdened with the continuing and substantial decontamination and health care costs of the Chernobyl accident. Accident Timeline

Prypiat, Ukraine Pripyat (Ukrainian: При́п'ять, Pryp’yat’; Russian: При́пять, Pripyat’ Pronunciation) is an abandoned city in northern Ukraine, near the border with Belarus. Named for the nearby Pripyat River, Pripyat was founded on 4 February 1970, the ninth nuclear city in the Soviet Union, for the Chernobyl Nuclear Power Plant.[2] It was officially proclaimed a city in 1979, and had grown to a population of 49,360[3] before being evacuated a few days after the 26 April 1986 Chernobyl disaster. Background[edit] Panoramic view of Pripyat in May 2009 Access to Pripyat, unlike cities of military importance, was not restricted before the disaster as nuclear power stations were seen by the Soviet Union as safer than other types of power plants. Development[edit] Along with its prime goal as being home to nuclear power plant's employees, Pripyat had been viewed as a major railroad and river cargo port in northern Ukraine. There also were some street names that had local bearings, e.g. Post-Chernobyl years[edit]

Zone of alienation The Chernobyl Nuclear Power Plant Zone of Alienation (Ukrainian: Зона відчуження Чорнобильської АЕС, zona vidchuzhennya Chornobyl's'koyi AES) is the officially designated exclusion area around the site of the Chernobyl nuclear reactor disaster.[4]:p.4–5:p.49f.3 It is also commonly known as the Chernobyl Exclusion Zone, the 30 Kilometer Zone, or simply The Zone[4]:p.2–5 (Ukrainian: Чорнобильська зона, Chornobyl's'ka zona). Established by the USSR military soon after the 1986 disaster, it initially existed as an area of 30-kilometre radius from the Chernobyl Nuclear Power Plant designated for evacuation and placed under military control.[5][6] Its borders have since been altered to cover a larger area of Ukraine. The Chernobyl Exclusion Zone borders a separately administered area, the Polesie state radiation and ecological reserve, to the north, in Belarus. Geographically, it includes the northernmost raions (districts) of the Kiev and Zhytomyr oblasts (regions) of Ukraine. History[edit]

Chernobyl Nuclear Power Plant Chernobyl's location in Ukraine. Monument and the fourth reactor. The nuclear power plant site is to be cleaned by 2065. On January 3, 2010, a Ukrainian law stipulating a programme toward this objective came into effect.[1] Construction[edit] The V.I. The completion of the first reactor in 1977 was followed by Reactor No. 2 (1978), No. 3 (1981), and No. 4 (1983). Reactor Nos. 3 and 4 were second generation units, whereas Nos. 1 and 2 were first-generation units (like those in operation at Kursk Nuclear Power Plant). Electrical systems[edit] The power plant is connected to the 330 kV and 750 kV electrical grid. The 330 kV line is normally not used, and serves as an external power supply, connected by a station transformer to the power plant's electrical systems. The 7A, 7B, and 8B boards are also connected to the three essential power lines (namely for the coolant pumps), each also having its own diesel generator. Turbo generators[edit] Reactor Fleet[edit] Accidents[edit] 1982[edit] 1986[edit]

Chernobyl Nuclear Power Plant - Website Works on the New Safe Confinement Arch Eastern part movement from the assembly zone in the waiting area are underway at Chernobyl NPP. This work is performed by Novarka’s company subcontractor - Dutch firm MAMMOET using the unique equipment of its own manufacturing. In this process 112 powerful jacks are used, they are installed along the Arch perimeter from its northern and southern sides. Arch construction, the weight of which at the moment is 12,600 tons, is moving on 10 meters per hour. Chernobyl Chernobyl area as seen from the Russian space station Mir in 1997 A grocery store in Chernobyl. The text on the window reads, "Café Bar". Chernobyl or Chornobyl (IPA /tʃɜː(ɹ)ˈnɒb.əl/; Ukrainian: Чорнобиль, pronounced [tʃɔrˈnɔbɪlʲ]; Russian: Чернобыль, pronounced [tɕɪrˈnobɨlʲ], Polish Czarnobyl) is a city in the restricted Chernobyl Exclusion Zone situated in northern Kiev Oblast, Ukraine near the border with Belarus. The city was evacuated in 1986 owing to the Chernobyl disaster at the Chernobyl Nuclear Power Plant, located 14.5 kilometres (9.0 mi) north-northwest. After the accident the Chernobyl Raion administration was transferred to the neighboring Ivankiv Raion. Name origin[edit] History[edit] Chernobyl had a rich religious history. The Dominican church and monastery were founded in 1626 by Lukasz Sapieha, at the height of the Counter-reformation. Since the 1880s, Chernobyl has seen many changes of fortune. Chernobyl nuclear reactor disaster[edit] Chernobylite[edit] See also[edit]

Related: