[1] Hot water and steam leaking from a broken pipe killed five workers and resulted in six others being injured.

[13] A review of plant parameters did not uncover any precursor indicators before the accident nor were there any special operations that could have caused the pipe rupture.

[13] Mihama-3 restarted in January 2007 after making changes to "reestablish a safety culture" within KEPCO and obtaining permission from Fukui Prefecture and industry regulators.

[14] In August 2011 citizens of the Shiga prefecture, at the banks of Lake Biwa, filed a lawsuit at the Otsu District Court, seeking a court order to prevent the restart of seven reactors operated by Kansai Electric Power Company, in the prefecture Fukui.

[16] On 5 March 2012 a group of seismic researchers revealed the possibility of a 7.4 M (or stronger) earthquake under the Tsuruga Nuclear Power Plant.

On top of this, the presence of the oceanic faults were not taken into account by NISA and JAP in the assessment of the safety of the Tsuruga nuclear power plant.

The Mihama Nuclear Power Plant and the Monju fast-breeder reactor could also be affected by a possible earthquake caused by the Urazoko fault.

Kansai Electric determined that it was not economical to invest in the costly refits of the two older reactor units (Mihama 1 and 2) given their comparatively small output, and decommissioned them in March 2015.

Furthermore, nine people from Fukui, Kyoto and Shiga prefectures, filed a lawsuit with the Osaka District Court, seeking to stop unit 3.