国内の被曝(ひばく)線量の基準などを検討する文部科学省の放射線審議会の基本部会は６日、東京電力福島第一原子力発電所事故で放射性物質が拡散した状況下の一般住民の被曝線量について、「年間１～２０ミリ・シーベルトの範囲で可能な限り低い値を段階的に設定する」とする見解案をまとめた。
The Radiation Council at the Ministry of Education and Science submitted its opinion on the domestic standard on radiation exposure on October 6. Considering the current situation of radioactive materials widely spread after the Fukushima I Nuclear Power Plant accident, the Council's opinion is to set the lowest possible standard in stages between 1 to 20 millisieverts per year for the residents in Japan
.
国際放射線防護委員会（ＩＣＲＰ）の２００７年の勧告を国内にも適用した。
It is the recommendation of the ICRP in 2007, and the Council has adopted that recommendation for the domestic standard.
一般住民の平常時の被曝線量限度は、年間１ミリ・シーベルトとされている。しかし、同部会は放射性物質の汚染が広がる現状を線源が計画的に管理されていない「現存被ばく状況」と判断、基準を緩和して「年間１～２０ミリ・シーベルト」のＩＣＲＰ勧告を国内に導入するかどうか検討していた。
The peacetime radiation exposure limit for the residents in Japan is 1 millisievert per year. However, the Council determined the current situation in Japan of ever spreading radioactive contamination to be that of "existing radiation exposure" where the source of radiation is not systematically controlled. It had been discussing whether to loosen the existing standard and introduce the ICRP's recommendation of "between 1 and 20 millisieverts per year" as the new domestic standard.
EDIT
http://ex-skf.blogspot.com/2011/10/japans-ministry-of-education-ready-to.html
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