“While I was with Tokyo Electric Power Co. (Tepco), a question was raised internally as to whether or not the measuring pipe installed at the Fukushima No. 1 nuclear power plant, the diameter of which is about the same as that of a human thumb, can withstand an earthquake. But Tepco has yet to make clear whether or not the March 2011 earthquake damaged that pipe,” says Toshio Kimura, a former Tepco plant engineer.

Kimura, 49, who served the company for 17 years from 1983 to 2000 and worked at Fukushima No. 1 for 12 years, is strongly of the view that pipes in the plant were damaged seriously by the quake before a subsequent tsunami struck the plant.

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