First Ukrainian nuclear power plant is located in northern Ukraine in the Kiev region near the border with Belarus on the banks of the Pripyat River. Construction of the first plant (the first and second power units) was started in 1970, it began operation in 1977. The second stage (the third and fourth power units) was built in 1983. The construction of the third stage (the fifth and sixth power units) completed not.
As of April 1986 operated four units with RBMK-1000 reactors with total generating capacity of 4,000 megawatts, the plant at that time was the most powerful energy generator in the USSR. April 26, 1986 at 1:23:59 during the design tests at the fourth power unit, explosion completely destroyed the reactor. The building was partially collapsed; the roof of the reactor building and the turbine hall was in fire, eliminated by 5 o'clock in the morning. As a result of the accident it was thrown about 380 million Curies of radioactive substances to the environment. During the explosion, one person died, another died this morning from injuries, 28 people from the fire station and staffs died of acute radiation sickness in the following months
To mitigate the consequences of the accident in 1986, and in subsequent years has been involved 600 thousand people. The main task of the liquidators was to reduce emissions from the reactor, decontamination and the construction of the protective structure around the 4th block ("Shelter"). Its construction was completed on November 30, 1986. October 1, 1986 was again put into operation 1st unit, the 5th of November - 2nd December 4 - 3rd. Construction of the 5th and 6th blocks was discontinued.
May 23, 1986 in the premises of MCP cable tunnels and shafts sunk pipelines due to a short circuit caused a fire, which lasted about 7 hours. The fire extinguishing attended 286 firefighters got significant radiation doses.
October 11, 1991 while reducing the number of turns of the turbine generator unit 4 of the second unit for subsequent shutdown caused a fire in the turbine hall. The fire was extinguished by 6:00.
2nd unit was stopped after the accident of 1991, 1st - November 30th, 1996. On December 15, 200, the Chernobyl NPP finally shutdown its Power Units in accordance with the arrangements set forth in the Memorandum of Understanding between G7 governments, the Commission of the European Communities and the government of Ukraine.