国际放射防护委员会(ICRP)在考查了最近十年来出现的新资料的基础上,于1977年发表了它的第26号出版物,用以代替以往的建议书(1965年建议及1969年和1971年的补充建议)。这个新建议书在放射生物学,剂量限制制度、各种防护标准以及辐射防护中的若干基本概念等方面提出了不少新建议,与历年来的建议相比有较大的改革。既然ICRP的基本建议有了重大改变,那就必然要用新的报告代替1959年出版的第2号出版物,内照射容许 The International Commission on Radiological Protection (ICRP) published its publication No. 26 in 1977 on the basis of examining new information emerging in the recent decade, replacing the previous Recommendation (Recommendation 1965 and 1969 and 1971 Year supplement). This new Recommendation has put forward many new proposals in the fields of radiobiology, dose-limiting systems, various protection standards and some basic concepts in radiation protection. This proposal has been greatly reformed in comparison with the proposals made over the years. Since there have been major changes to the ICRP’s basic recommendations, it is inevitable to replace the publication No. 2, published in 1959, with a new report that permits internal exposure