A Japanese nuclear reactor shut down automatically Thursday because of shaking turbine, and there was no release of radioactivity, Kyoto News agency reported.

The shutdown affected a reactor at the Hermosa nuclear power plant, about 100 miles west of Tokyo, the report said.

Kyoto said "turbulence" in the turbine triggered the shutdown, but the report had no further details.

The nuclear energy industry in Japan has been plagued by safety violations, reactor malfunctions and accidents.

The country's 52 nuclear reactors supply 35 percent of Japan's electricity.

CountryWatch: Japan