Japan’s nuclear watchdog on Wednesday decided that a reactor in Fukui Prefecture failed to pass its restart safety review, marking the first such case since the regulatory body’s founding after the 2011 Fukushima nuclear crisis. The No. 2 reactor at the Tsuruga plant, operated by Japan Atomic Power Co., fell short of the safety requirements due to a possible active fault underneath the offline unit. The Nuclear Regulation Authority plans to seek public comments on its assessment report before making its decision official possibly in October. In quake-prone Japan, building reactors or other imp…