By Mycle Schneider, Special to CNN
30 August 2013
Editor’s note: Mycle Schneider is an independent international consultant on energy and nuclear policy based in Paris. He is the coordinator and lead author of the World Nuclear Industry Status Report. The views expressed are his own.
“Careless” was how Toyoshi Fuketa, commissioner of the Japanese Nuclear Regulation Authority, reportedly described the inspection quality of hundreds of water tanks at the crippled Fukushima plant following the recent discovery of a serious radioactive spill. China’s Foreign Ministry went further, saying it was “shocking” that radioactive water was still leaking into the Pacific Ocean two years after the Fukushima incident.
Both comments are to the point, and although many inside and outside Japan surely did not realize how bad the March 11, 2011 disaster was – and how bad it could get – it seems clear now that we have been misled about the scale of the problem confronting Japan. The country needs international help – and quickly.
While the amount of radioactivity released into the environment in March 2011 has been estimated as between 10 percent and 50 percent of the fallout from the Chernobyl accident, the 400,000 tons of contaminated water stored on the Fukushima site contain more than 2.5 times the amount of radioactive cesium dispersed during the 1986 catastrophe in Ukraine.
So, where has this huge amount of highly contaminated water – enough to fill 160 Olympic-size swimming pools – come from? In the aftermath of the 2011 earthquake and tsunami, the reactor cores of units 1, 2 and 3 melted through the reactor vessels into the concrete. Nobody knows how far the molten fuel went through the containment – radiation levels in the reactor buildings are lethal, while robots got stuck in the rubble and some never came back out.