中国科学院近代物理研究所外照射个人剂量监测(1986～1995)

INDIVIDUALDOSEMONITORINGOFRADIATION WORKERSININSTITUTEOFMODERNPHYSICS CHINESEACADEMYOFSCIENCES(1986～1995)

中国科学院近代物理研究所（以下简称近物所）工作人员所受职业照射主要来自光子外照射。本文介绍１９８６～１９９５ 年近物所放射工作人员外照射个人剂量监测的方法及结果。在１９８６～１９９５ 年间，共监测１ ２１７ 人（次），年个人有效剂量平均值为０１０ ｍ Ｓｖ；个人年有效剂量＜ ０１０ ｍ Ｓｖ 的有１０４６ 人（次），占监测总人数（次）的８６％ ；个人年有效剂量在５０～１０ ｍ Ｓｖ 范围的只有４ 人，仅占０３％ ；最高个人年有效剂量为１０ ｍ Ｓｖ。

The occupationalexposures to radiation workers in Institute ofModern PhysicsChineseAcadem y ofSciences m ainly com e from photon extenralexposure. This paperpre sentsthe methodsand the resultsofphoton externalexposure individualdosem onitoring of radiation workers(1986～1995).In theyearsfrom 1986 to 1995, wemonitored 1 217work ers, annualaverageindividualeffectivedoseis 0.1 m Sv. Theam ountofthe workerswhose individualeffective dose was lessthan 0.1 mSv is 1 046,86% ofthe total. There were only fourw orkersw hose individualeffective dose ranged from 5.0 m Sv to 10 m Sv, 0.3% ofthe total. The biggest individual effective dose was received by the accelerator m aintenance workers, which w as 10m Sv. (