Almost six years after the nuclear power plant accident of TEPCO, Tokyo Electric Power, Fukushima, on 11 March 2011, the situation could worsen. Until now what happened in Japan it was considered the worst nuclear accident since Chernobyl, Ukraine, in 1986.
In recent days, a survey made by a robot confirmed that inside reactor number 2 of Fukushima Daichi nuclear power plant, emissions reached 530 sievert per hour, a lethal measure to humans even after a short exposure. According to the Japanese Institute of Radiological Sciences 6 sievert are sufficient to cause the death of a person, but already be at 1 sievert would have very serious effects. According to specialists this is an ‘unimaginable’ value that far exceeds the worst predictions that until now had been made.
The cause is a leak of about one square meter along the metal grate in the container at the reactor pressure.
A level so high that even for the same robot would be hard to survive (it is designed to resest a maximum dose of 1000 sievert). In other words you can not use the robot inside the reactor for more than two hours (in the past Tepco had already tried using a robot, that had miserably failed in their mission because of the radiation).
After this discovery, the estimates of expenditure for the new decommissioning process involving a cost of EUR 170 billion, double the original estimate.
But the problem is not only money. Greenpeace environmentalists, in 2016, revealed the evidence of the profound environmental impacts of the nuclear disaster. At and sea on earth. High concentrations of radiation have been detected on the new foliage and pollen, a sign of mutations in growth. And yet, they were recorded inherited mutations in some populations of butterflies and worms with damaged DNA in highly contaminated areas. But the greatest effects are those on fish. It was detected cesium contamination also in freshwater fish. Greenpeace Japan has conducted a survey on radioactive contamination of the Pacific Ocean where the decontamination program of the government will have no impact to reduce “the ecological threat that comes from the huge amount of radiation from the Fukushima nuclear disaster”, said Ulrich Kendra, senior Greenpeace campaigner for nuclear power in Japan.
The confirm that the risks associated with the use of nuclear power as an energy source are unacceptable.