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Japan Nuclear Crisis

Children’s Day In Japan: Radiation limits for students same as nuclear workers

Japan’s Nuclear Catastrophe Leaves Little to Celebrate on Children’s Day
Source: Institute for Policy Studies

A recent government decision callously put thousands of kids in harm’s way.

May 5 is Children’s Day, a Japanese national holiday that celebrates the happiness of childhood. This year, it will fall under a dark, radioactive shadow.

Japanese children in the path of radioactive plumes from the crippled nuclear reactors at the Fukushima Dai-Ichi power station are likely to suffer health problems that a recent government action will only exacerbate.

On April 19, the Japanese government sharply ramped up its radiation exposure limit to 2,000 millirem per year (20 mSv/y) for schools and playgrounds in Fukushima prefecture. Japanese children are now permitted to be exposed to an hourly dose rate 165 times above normal background radiation and 133 times more than levels the U.S. Environmental Protection Agency allows for the American public. Japanese school children will be allowed to be exposed to same level recommended by the International Commission on Radiation Protection for nuclear workers. Unlike workers, however, children won’t have a choice as to whether they can be so exposed.

This decision callously puts thousands of children in harm’s way.

Experts consider children to be 10 to 20 times more vulnerable to contracting cancer from exposure to ionizing radiation than adults. This is because as they grow, their dividing cells are more easily damaged — allowing cancer cells to form. Routine fetal X-rays have ceased worldwide for this reason. Cancer remains a leading cause of death by disease for children in the United States.

With a half-life of 8.5 days, iodine-131 is rapidly absorbed in dairy products and in the human thyroid, particularly those of children. Cesium-137 has a half-life of 30 years and gives off potentially dangerous external radiation. It concentrates in various foods and is absorbed throughout the human body. Unlike iodine-131, which decays to a level considered safe after about three months, cesium-137 can pose risks for several hundred years.

Measurements taken at 1,600 nursery schools, kindergartens, and middle school playgrounds in early April indicate that children are regularly getting high radiation doses. Radiation levels one meter above the ground indicate that children at hundreds of schools received exposures 43- 200 times above background. And this is outside of the “exclusionary zone” around the Dai-Ichi reactors, where locals have been evacuated. Japan’s Ministry of Education and Science has limited outdoor activities at 13 schools in the cities of Fukushima, Date, and Koriyama Cities.

Although the extent of long-term contamination is not yet fully known, disturbing evidence is emerging. Data collected 40 kilometers from the Fukushima’s nuclear accident show cumulative levels as high as 9.5 rems (95 mSv) — nearly five times the international annual occupational dose. Soil beyond the 30-kilometer evacuation zone shows cesium-137 levels at 2,200 kBq per square meter — 67 percent greater than that requiring evacuation near Chernobyl.

Three-fourths of the monitored schools in Fukushima had radioactivity levels so high that human entry shouldn’t be allowed, even though students began a new semester on April 5.

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About Tokyo Nuclear Watchdog

I'm a foreigner living in Tokyo, Japan, and I have been impacted by the Japan Nuclear Crisis of March 11, 2011. Though the impact of the massive earthquake that was followed by an even more disastrous tsunami, which led to the nuclear crisis, was not as disastrous in Tokyo as it was around the Fukushima Nuclear Plants, there has not been sufficient data to prove that Tokyo is safe from nuclear radiation as is being portrayed by the authorities. This site aims at erring on the side of safety while it keeps a close watch on the crisis and how it affects those residing in and around the Tokyo (Kanto) region. Remember that the proper truth about radiation may only come out 5 or 10 years later when a classified file gets leaked out, but that will be too late for you to do anything about it if you were in Tokyo and had been through those radiation then (which as of this writing, is NOW). Do not believe the media. Trust your instincts, and make your own well-informed decisions about your safety. This site is here to help you, and your contributions are most welcome.

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