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April 06, 2011

Suggestion to raise radiation limits from the Journal Nature

Nature - A long shadow over Fukushima

The long-term response to Fukushima will have to be pragmatic. The Japanese authorities may have to rewrite the rule-book, as they have begun to do in allowing doses of 250 mSv for radiation workers. After an accident, it may be appropriate to set exposure limits for members of the public higher than the typical 1 mSv per year maximum. A limit of 5–10 mSv per year (perhaps with voluntary resettlement at doses above 1 mSv per year) may be appropriate, bearing in mind that millions of people in areas of high natural radioactivity worldwide are exposed to more than 10 mSv per year, and that occupational exposures (for example, to long-haul air crews) can be around 5 mSv per year.



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