Ten months after regional governments were required to submit nuclear disaster evacuation plans, a lack of central government guidance and local-level cooperation is generating concern that Kansai will be ill-prepared to respond if any of Fukui Prefecture's 13 commercial reactors suffers a meltdown.

Questions remain about how fleeing Fukui residents who pass through neighboring Kyoto would be stopped and screened for radiation, and how residents in the rural northern areas closest to the reactors would be gathered and evacuated in a timely manner. Evacuating the elderly, young mothers and the pregnant is also a serious concern.

There is also the question of what to do if Shiga's Lake Biwa, which supplies drinking water to about 14.5 million people, gets contaminated with radiation.