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首页> 外文会议>International Workshop on Environmental Contamination from Uranium Production Facilities and their Remediation >RADON SURVEY IN OLD URANIUM MINES IN THE REGION OF SABUGAL, PORTUGAL
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RADON SURVEY IN OLD URANIUM MINES IN THE REGION OF SABUGAL, PORTUGAL

机译：氡气调查在老铀矿的矿山在萨布瓦尔，葡萄牙

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摘要

The Portuguese uranium industry — with a significant concentration of mines in the Guarda district — experienced a significant development period after World War Two, supported by military needs. Today all the uranium mines have been closed but radioactive releases may be a significant cause of environmental and radiological problems in and around the old uranium mining facilities. The main purpose of the present work is to assess outdoor and indoor radon levels, as well as radon exhalation rates, in the vicinity of six abandoned uranium mines (covering an area of about 70 km~2) in the Sabugal region. The results show that the outdoor radon concentrations in the region range from 84 to 412 Bq/m~3, while half of the indoor radon measurements were found to be above the EU recommended action level for existing buildings (400 Bq/m~3). The exhalation rates from soils and tailings ranged from 6 to 323 mBq/m~(-2)/s~(-1) during the first field campaign (July 2002), and from 7 to 1198 mBq/m~(-2)/s~(-1) during the second campaign (August 2002). The highest values were confined to the mining areas or to their immediate proximity.
机译：葡萄牙铀产业 - 守卫区的大量矿山 - 第二次世界大战后经历了重要的发展时期，由军事需求支持。今天，所有的铀矿都已经关闭，但放射性释放可能是旧铀矿业设施中和周围环境和附带的重要原因。本作本作的主要目的是评估户外和室内氡水平，以及六个被遗弃的铀矿（覆盖萨比尔地区约70公里〜2）附近的氡气漏率。结果表明，区域中的室外氡浓度范围为84至412bq / m〜3，而在欧盟的现有建筑物的推荐行动水平之上，发现了一半的室内氡测量的速度范围为84至412 bq / m〜3。 。土壤和尾矿的呼出率范围为6至323 MBq / m〜（-2）/ s〜（-2）/ s〜（-1）在第一个外地运动（2002年7月），7至1198 MBQ / M〜（-2） / s〜（-1）在第二次竞选期间（2002年8月）。最高值被限制在矿区或立即接近。

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