Japan’s response to the nuclear crisis that followed the March 11 earthquake and tsunami was confused and riddled with problems, including an erroneous assumption an emergency cooling system was working and a delay in disclosing dangerous radiation leaks, a report revealed yesterday.
The disturbing picture of harried and bumbling workers and government officials scrambling to respond to the problems at the Fukushima Dai-ichi Nuclear Power Plant was depicted in the report detailing a government investigation.
The 507-page interim report, compiled by interviewing more than 400 people, including utility workers and government officials, found authorities had grossly underestimated tsunami risks, assuming the highest wave would be 6m. The tsunami hit at more than double those levels.
The report criticized the use of the term soteigai, meaning “outside our imagination,” which it said implied authorities were shirking responsibility for what had happened. It said by labeling the events as beyond what could have been expected, officials had invited public distrust.
“This accident has taught us an important lesson on how we must be ready for soteigai,” it said.
The report, set to be finalized by the middle next year, found workers at Tokyo Electric Power Co, the utility that ran the plant, were untrained to handle emergencies such as the power shutdown that struck when the tsunami destroyed backup generators — setting off the world’s worst nuclear disaster since Chernobyl.
There was no clear manual to follow and the workers failed to communicate, not only with the government, but also among themselves, it said.
Finding alternative ways to bring sorely needed water to the reactors was delayed for hours because of the mishandling of an emergency cooling system, the report said. Workers assumed the system was working, despite several warning signs that it had failed and it was sending the nuclear core into meltdown.
The report acknowledged that even if the system had kicked in properly, the tsunami damage might have been so great that meltdowns would have happened anyway.
However, a better response might have reduced the core damage, radiation leaks and the hydrogen explosions that followed at two reactors and sent plumes of radiation into the air, according to the report.
Sadder still was how the government dallied in relaying information to the public, such as using evasive language to avoid admitting serious meltdowns at the reactors, the report said.
The government also delayed disclosure of radiation data in the area, unnecessarily exposing entire towns to radiation when they could have been evacuated, the report found.
The report recommends changes so utilities would respond properly to serious accidents.
It recommends separating the nuclear regulators from the unit that promotes atomic energy, echoing frequent criticism since the disaster.
Japanese nuclear regulators are in the same ministry that promotes the industry, but they are to be moved to the environment ministry next year to ensure more independence.
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