Why did it take so long? That’s what many critics are asking about the Japanese government’s disclosure that much more radiation was released the first week of the disaster at the Fukushima Daiichi nuclear plant than previously indicated.
As The New York Times reports, Japan upgraded the severity of Fukushima Daiichi catastrophe to level 7, the worst possible, only Tuesday — a full month after a massive earthquake and tsunami precipitated the disaster by knocking out the nuclear plant’s cooling system.
The government says that the reclassification was not the product of new leaks, but rather new computer models showing greater levels of radioactive cesium and iodine emissions days after the plant was struck. The assessment puts Fukushima alongside Ukraine’s Chernobyl accident in 1986 as the only level-7 nuclear catastrophes the world has witnessed.
The delay in revealing the information, however, led to accusations that the government hid the scale of the disaster from the public, prompting a denial from Prime Minister Naoto Kan.
“What I can say for the information I obtained — of course the government is very large, so I don’t have all the information — is that no information was ever suppressed or hidden after the accident,” Kan said. “There are various ways of looking at this, and I know there are opinions saying that information could have been disclosed faster. However, as the head of the government, I never hid any information because it was inconvenient for us.”
However, the Times reports that Seiji Shiroya, an official in the nation’s independent Nuclear Safety Commission, acknowledges that the government delayed releasing the findings of the computer simulations of the radiation emissions. While he points to worries about the large margin for error in the initial computer analysis as the primary reason, Shiroya also points to a more practical governing reason.
“Some foreigners fled the country even when there appeared to be little risk,” he said. “If we immediately decided to label the situation as Level 7, we could have triggered a panicked reaction.”
The government also downplayed the suggestion from an official with the Tokyo Electric Power Company, the company that operates Fukushima, that the radiation emissions could eventually exceed those of Chernobyl.
“I cannot understand their position,” said Hidehiko Nishiyama, deputy director general of the Nuclear and Industrial Safety Agency, the nation’s primary nuclear regulator. He also suggested that Tepco was “thinking about the worst-case scenario,” and that “I think they don’t want to be seen as optimistic.”
Both the government and independent experts agree that the risks to human health from Fukushima are nowhere near what they were in Chernobyl.
Related Posts:
Japan Raises Nuclear Disaster Rating, Matching Chernobyl Level
Amid Aftershocks, Japan Widens Radiation Evacuation Zone
Radioactive Water Leak Plugged at Japanese Nuclear Plant



Some people are never satisfied … ah, the problems of an impresario (The Fairy Godfather in “Barnaby” who always reminds me a bit of the TepCo CEO).
Now, with more radiation leaking and being deposited through the air by rainfall, one should know:
How to protect your garden patch or field against radioactive fall-out
http://crisismaven.wordpress.com/2011/04/06/how-to-protect-your-garden-patch-or-field-against-radioactive-fall-out/