A reactor at Kansai Electric Power Co.'s Takahama nuclear power station in Japan's Fukui Prefecture was automatically halted Monday after an alert went off warning of a rapid decrease in the number of neutrons within the unit, the complex's regulator and operator said.The No. 4 reactor was halted at 3:21 p.m., the Osaka-based utility said, adding that there has been no indication of the incident causing environmental contamination. The reactor's cooling function is normal, according to the Nuclear Regulation Authority.Abnormalities were picked up by at least two of the four neutron detector…READ FULL ARTICLE