A court on Friday nullified the government's approval of safety measures for two reactors at Kansai Electric Power Co.'s Oi nuclear plant in Fukui Prefecture.
The Osaka District Court ruled in favor of about 130 plaintiffs who claimed that the Nos. 3 and 4 reactors of the nuclear plant are vulnerable to a major earthquake.
It is the first time a court has blocked government approval for a power company to operate a nuclear plant under new safety standards introduced following the 2011 Fukushima nuclear disaster.