TVER, October 19. /TASS/. The short circuit followed by smoke occurred in a room of the second power unit of the Kalinin nuclear power plant in the Tver region, to the north-west of Moscow, the NPP’s press service said on Wednesday.
The incident occurred at 7.35 p.m. on Tuesday in a room housing electrical devices of the power unit that was undergoing planned maintenance. "The fire engines did not report any fire at the Kalinin NPP," the press service said.
The NPP management stressed that the smoke did not spread outside the room and did not affect the work of the power unit’s equipment. "The reasons for the short circuit are being established, it said." The radiation background at the station and the adjacent territory remains unchanged.
Only unit 1 and unit 3 are currently in operation at the Kalinin NPP. The unit 4 was disconnected from the power grid on October 14 to carry out works on the turbine control system.
The Kalinin NPP, owned by the state enterprise Rosenergoatom, is located in the Udomelsky district of the Tver region. It produces 70% of electricity in the region and provides power to the energy system of central Russia. The NPP consists of four power units with pressurized-water reactors with the capacity of 1,000 MW.