quinta-feira, 21 de abril de 2016

Chernobyl and Fukushima: different disasters with the same problems

About 8000 km and of 25 years, separate the nuclear disaster at Chernobyl, in Ukraine, and Fukushima in Japan. There are differences between the two disasters but there is also great similarities.

The two nuclear power stations have begun the activity in the last century 70. Fukushima began operation in 1971 and the Chernobyl six years later. Ukrainian Center worked for nine years, until 1986, and the Chinese was open for four decades.

During the accidents, in Fukushima estavm six reactors operating, in Chernobyl four.


Construction errors and negligence hav e been singled out as the main causes of the two catastrophes.

The operators of Chernobyl have committed several errors in the course of the experiment. These failures were initially considered by the International Atomic Energy Agency (IAEA) as the main causes of the disaster. Later altered the conclusions.

The construction of the RBMK reactor (High Power Channel-type Reactor), used at the plant, is considered one of the main reasons for the accident. The scientists who built the reactor thought it would be impossible for a particular combination occurred at the same time. For this reason, not create protection systems. However, this chain of events, which the scientists considered it impossible, occurred on the night of April 26 1986.

Iwaki, Japan

The Chernobyl reactors and Fukushima obtained 7-level classification, on an international scale of nuclear accidents of IAEA (the highest level, corresponding to major accident).

The exclusion zones are still circling the two nuclear plants: the Chernobyl has a radius of 30 km of Fukushima 20.

In both situations, thousands of people had to be resettled. According to official data, 300,000 have been displaced in Japan and 350,000 in Ukraine, Belarus and Russia, in 1986 and in the following years.

Five years after the disaster, many of the displaced Fukushima still live in temporary shelters. They have the ri ght to visit their homes in the exclusion zone for 5 hours at a time.

About of 1200 Ukrainians returned to their homes, in the exclusion zone, in the past three decades, despite this being illegal. Mostly consists of old people.

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