The Nuclear and Industrial Safety Agency and Tokyo Electric Power Co. were aware at least by 2006 that the Fukushima No. 1 nuclear plant was at risk of having its power knocked out by massive tsunami, NISA officials said Tuesday.
According to the officials, the awareness was shared at a study session attended by several utilities that was held in response to the 2004 Sumatra quake and tsunami in Indonesia.
A paper compiled in August 2006 indicated the participants recognized that “there is a possibility that power equipment could lose their functions if 14-meter tsunami hit the Fukushima plant, with seawater flowing inside the (reactor) turbine buildings.”
The agency, however, did not confirm whether the utilities disseminated this information internally, the officials said.
Continue reading at NISA, Tepco knew in ’06 of Fukushima tsunami threat