Das Notizbuch von ka2ka ― ka2kaの雑記帳


ジム・スミス博士(Dr. J.T. Smith)
Dr. J.T. Smith, Reader in Environmental Physics at the University of Portsmouth, said:
“The preliminary grading of the Fukushima accident as Level 7 on the International Nuclear Events Scale reflects the severity of radionuclide releases to land and sea. But there are key differences between Fukushima and Chernobyl, the only previous Level 7 accident. From the data so far, it seems that about ten times more radioactivity was released at Chernobyl. Crucially, key health protection countermeasures have been put in place at Fukushima. At Chernobyl, local people were not evacuated until about 48 hours after the accident: children were still playing outside as the reactor burned, and potassium iodide tablets were not distributed. In the weeks after Chernobyl, people continued to eat milk and leafy vegetables highly contaminated with radioactive iodine.
“By evacuating and sheltering the population, implementing food bans, and distributing potassium iodide tablets, the Japanese authorities will have prevented the most serious health effects of Fukushima. Levels of radioactive iodine are declining rapidly by radioactive decay – current levels are about a tenth of what they were when the accidents happened. But, it is clear that there has been a major contamination of land and sea. The effects of this are being seen now, with evacuation and food bans in place over a wide area. It appears from the data available so far, that there has been significant radiocaesium contamination, particularly of an area of land to the northwest of Fukushima. Radiocaesium remains in the environment for the long term and initial data suggests that this could mean that countermeasures (for example, food bans) will need to be in place in some areas for decades.”

by ka2ka55 | 2011-04-13 17:22 | ニュース | Comments(0)