I haven't finished reading the report document yet (totally over 300 pages), but in addition to the zone classification, there are other useful information and pedagogical analyses already in the first several pages.
In page 14, there is a paragraph saying:
The USSR undoubtedly achieved considerable success in developing nuclear science and engineering, especially in military industry. However, this success was too much politicized. At the same time, shortcomings and errors that led to large disasters both at civil and military nuclear facilities were concealed. ----- All this resulted in the fact that infallibility moods become firmly established in the nuclear engineering. ---- "The Soviet nuclear reactors are the best in the worlds. " This (attitude) was also eloquently seen in response to the accident happened at the American Three Mile Island Nuclear Power Plant in 1979, when the leaders of the USSR nuclear industry announced that "such accident was impossible under socialism". -----
This analysis can be applied literary "exactly" to the Fukushima nuclear disaster, except the "under socialism" part, which should be replaced with "in Japan".
After nearly 30 years since the Chernobyl catastrophe, no Japanese politicians as well as bureaucrats learned the lessens from the Chernobyl. The ancient Romans used to say "Errare Humanum est", but this repetitive mistake by the Japanese government is too much and unacceptable to me.
