Radiological hazards of TENORM in the wasted petroleum pipes
Radiological hazards of TENORM in the wasted petroleum pipes
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DOI：
10.1016/j.jenvrad.2009.08.016
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发表时间：
2010-01-01
影响因子：
2.3
通讯作者：
El-Masry, N. M.
中科院分区：
文献类型：
--
作者：
Abo-Elmagd, M.;Soliman, H. A.;El-Masry, N. M.
含有污泥和水垢的废弃石油管道作为一种技术上增强的天然存在的放射性物质（TENORM），会导致内部和外部的辐射危害，然后对工人产生显著的辐射剂量。为了有助于未来的废物管理政策有关的TENORM的存在，在处置地点的废弃石油管道，规模和污泥作为TENORM废物收集这些处置管道的放射性分析。这些管道从埃及西奈省南部的陆上油田进口。在水垢样品中测得Ra-226和Ra-228的最高平均浓度分别为519和50 kBq/kg。污泥处于镭浓度的正常范围内。暴露于废弃管道引起的平均吸收剂量等于4.09 mu戈伊h（-1）（来自污泥）和262 mu戈伊h（-1）（来自水垢）。这远远高于可接受的水平0.059 mu戈伊h（-1）。由于氡的吸入，计算了氡相关的重要参数，有利于内照射剂量的计算。污泥样品的真实的镭含量与氡析出率之间有较好的相关性。污泥的危害主要来自于其氡的高射气率（3.83%）。所获得的结果表明，有必要对石油残留物进行放射性核素含量筛查，以决定其最终处置方式。(C)2009爱思唯尔有限公司保留所有权利。
Disposal petroleum pipes containing sludge and scale as a technically enhanced natural occurring radioactive material (TENORM) leads to internal and external radiation hazards and then a significant radiation dose to the workers. In order to contribute to a future waste management policy related to the presence of TENORM in the disposal sites of wasted petroleum pipes, scale and sludge as TENORM wastes are collected form these disposal pipes for radiometric analysis. These pipes are imported from onshore oilfields at south Sinai governorate, Egypt. The highest mean Ra-226 and Ra-228 concentrations of 519 and 50 kBq/kg respectively, were measured in scale samples. Sludge lies within the normal range of radium concentration. The average absorbed dose caused by the exposure to the wasted pipes equal to 4.09 mu Gy h(-1) from sludge and 262 mu Gy h(-1) from scale. This is much higher than the acceptable level of 0.059 mu Gy h(-1). Due to radon inhalation, important radon related parameters are calculated which advantage in internal dose calculation. Fairly good correlation between real radium content and radon exhalation rate for sludge samples is obtained. The hazards from sludge come from its high emanation power for radon which equal to 3.83%. The obtained results demonstrate the need of screening oil residues for their radionuclide content in order to decide about their final disposal. (C) 2009 Elsevier Ltd. All rights reserved.