• Kyodo


An active fault running under reactors 1 and 2 at the Tsuruga nuclear plant in Fukui Prefecture is much longer than previously thought and could trigger a 7.4-magnitude earthquake, larger than earlier projections, according to a team of government-affiliated researchers.

“The worst-case scenario should be taken into consideration” as the Urasoko fault, now thought to extend at least 35 km, could activate faults on the south side of the Tsuruga plant, warned Yuichi Sugiyama, leader of the National Institute of Advanced Industrial Science and Technology’s research team.

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