英国国家放射防护局(NRPB)记录了12700名放射性工作人员1987年的个人剂量,其中有45人超过15mSv。男性平均为0.6mSv,女性平均为0.3mSv,全部工作人员的平均剂量为0.5mSv。反应堆维修和工业探伤人员的平均剂量最高,分别为1.1mSv和1mSv。与历年的剂量记录比较显示:平均剂量正逐年下降。这种下降并不是因为近期参加工作的工作人员所接受的剂量低所致。有趋势表明近 The British National Radiation Protection Agency (NRPB) recorded the individual doses of 12700 radiological workers in 1987, of which 45 were over 15 mSv. The average male was 0.6 mSv, the average female was 0.3 mSv, and the average dose for all staff was 0.5 mSv. The average doses of reactor maintenance and industrial inspection personnel were the highest, 1.1mSv and 1mSv respectively. Comparisons with calendar dose records show that the average dose is declining year by year. This decline is not due to the low doses accepted by staff members who have recently joined the workforce. A trend shows that