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首页> 外文期刊>Radiation Protection Dosimetry >AN ASSESSMENT OF ANNUAL WHOLE-BODY OCCUPATIONAL RADIATION EXPOSURE IN IRELAND (1996-2005)
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AN ASSESSMENT OF ANNUAL WHOLE-BODY OCCUPATIONAL RADIATION EXPOSURE IN IRELAND (1996-2005)

机译：爱尔兰年度全身体体职业辐射暴露评估（1996-2005年）

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Whole-body occupational exposure to artificial radiation sources in Ireland for the years 1996-2005 has been reviewed. Dose data have been extracted from the database of the Radiological Protection Institute of Ireland, which contains data on >95% of monitored workers. The data have been divided into three sectors: medical, industrial and education/research. Data on exposure to radon in underground mines and show caves for the years 2001 -05 are also presented. There has been a continuous increase in the number of exposed workers from 5980 in 1996 to 9892 in 2005. Over the same time period, the number of exposed workers receiving measurable doses has decreased from 676 in 1996 to 189 in 2005 and the collective dose has also decreased from 227.1 to 110.3 man millisievert (man mSv). The collective dose to workers in the medical sector has consistently declined over the 10-y period of the study while that attributable to the industrial sector has remained reasonably static. In the education/research sector, the collective dose typically represents 5% or less of the total collective dose from all practices. Over the 10 y of the study, a total of 77 914 annual dose records have been accumulated, but only 4040 (< 6%) of these represent measurable radiation doses in any given year. Over the same time period, there were 283 instances in which exposed workers received individual annual doses > 1 mSv and 21 of these exceeded 5 mSv. Most of the doses > 1 mSv were received by individuals working in diagnostic radiology (which also includes interventional radiology) in hospitals and site industrial radiography. There has been only one instance of a dose above the annual dose limit of 20 mSv. Evaluating the data for the period 2001-05 separately, the average annual collective dose from the medical, industrial and educational/research sectors are ～60, 70 and 2 man mSv with the average dose per exposed worker who received a measurable dose being 0.32, 0.79 and 0.24 mSv, respectively. Diagnostic radiology and site industrial radiography each represents > 60% of the collective dose in their respective sectors. Available data on radon exposure in one underground mine and in three show caves indicate an annual collective dose of 75 man mSv from these work activities. By comparison, previous estimates of exposure of Irish air crew to cosmic radiation have given rise to an estimated collective dose of 12 000 man mSv. It can be concluded therefore that the natural radioactivity sources account for well > 90% of all occupational exposure in Ireland. This evaluation does not include an estimate of exposure to radon in above-ground workplaces-these data are currently being evaluated and their inclusion will increase both the total occupational collective dose as well as the percentage of that dose due to natural radiation.
机译：回顾了1996-2005年爱尔兰的全身职业暴露于人工辐射源的情况。剂量数据已从爱尔兰放射防护学院的数据库中提取，该数据库包含有关> 95％的受监控工人的数据。数据已分为三个部门：医疗，工业和教育/研究。还提供了2001 -05年地下矿井和探洞中exposure的暴露数据。暴露工人的数量从1996年的5980人不断增加到2005年的9892人。在同一时期，接受可测量剂量的暴露工人的人数从1996年的676人减少到2005年的189人，集体剂量已经下降。也从227.1降至110.3毫毫西弗（man mSv）。在研究的10年期间，医疗部门对工人的集体剂量一直在下降，而工业部门的集体剂量则保持在合理的水平。在教育/研究领域，集体剂量通常占所有实践总集体剂量的5％或更少。在研究的10年中，已经累计了77 914个年度剂量记录，但是其中只有4040个（<6％）代表任何给定年份中的可测量辐射剂量。在同一时期，有283起暴露的工人接受的个人年剂量> 1 mSv，其中有21起超过5 mSv。大于1 mSv的大多数剂量是由医院放射诊断工作（也包括介入放射学）和现场放射照相工作的人员接受的。仅一次剂量超过年度剂量限值20 mSv的情况。分别评估2001-05期间的数据，医学，工业和教育/研究部门的年平均集体剂量分别为〜60、70和2 man mSv，每位接受可测量剂量的暴露工人的平均剂量为0.32，分别为0.79和0.24 mSv。诊断放射学和现场工业放射照相分别占各自部门总剂量的60％以上。在一个地下矿井和三个洞穴中可获取的ra气暴露数据表明，这些工作活动每年的集体剂量为75人mSv。相比之下，先前对爱尔兰航空机组暴露于宇宙辐射的估计得出的估计集体剂量为12000人mSv。因此可以得出结论，自然放射源占爱尔兰所有职业暴露的90％以上。该评估不包括对地上工作场所中ra的暴露的估计，目前正在评估这些数据，将这些数据包括在内将增加总职业集体剂量以及由于自然辐射导致的该剂量的百分比。

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