A leak of radioactive water on Tuesday caused the shutdown of a nuclear reactor in western Ukraine but posed no risk to the environment, officials said.
A senior official at the Rivne nuclear power plant who declined to give his name said 1.3 cubic meters of water escaped from the pipe used to cool the reactors, but remained within a sealed area.
The leakage "did not exceed permitted norms," state nuclear operator Energoatom said in a statement. "The reactor was stopped. No increase or radioactivity was registered at or near the plant," it said.
Scene of the Chernobyl nuclear meltdown in 1986, Ukraine currently produces around half of its electricity from nuclear power.