The accident occurred at the second power unit when a pipe with steam cracked in turbine hall yesterday. The steam filled the room, and leaked beyond the power plant. The employees of the Leningrad Nuclear Power Plant (LNPP) had to go home. The second unit was stopped manually, Ekho Moskvy reports.

According to specialists, the release was radioactive, because the waste steam entered the so-called loop reactor coolant. However, the population was encouraged not to panic.

East wind carried a cloud in the direction of Estonia and Finland.

The LNPP is located 80 kilometers from St. Petersburg, on the Gulf of Finland. It is considered one of the largest producers of electricity in the north-west Russia.