A provisional injunction handed down Tuesday by the Fukui District Court against the restarting of Kansai Electric Power Co.'s Takahama No. 3 and 4 reactors is a boost to opponents of nuclear power, even as the decision draws criticism from senior politicians, nuclear regulators, Kepco, and pro-nuclear Japanese media.

A panel of three judges led by Hideaki Higuchi handed down a provisional injunction banning the restart of the two Takahama reactors, saying that the earthquake-risk prediction method used by the Nuclear Regulation Authority in approving the reactors' restart was flawed.

"It is hard to find, for a nuclear power station that must be prepared for a remotely possible accident, the rationale for establishing a basic earthquake ground motion that is based upon the foundation of the image of a mean earthquake," the ruling said.