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首页> 外文期刊>Radiation Protection Dosimetry >ASSESSMENT OF LEVELS OF OCCUPATIONAL EXPOSURE TO WORKERS IN RADIOFREQUENCY FIELDS OF TWO TELEVISION STATIONS IN ACCRA, GHANA
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ASSESSMENT OF LEVELS OF OCCUPATIONAL EXPOSURE TO WORKERS IN RADIOFREQUENCY FIELDS OF TWO TELEVISION STATIONS IN ACCRA, GHANA

机译：加纳阿克拉两个电视台无线电频率场中工人职业接触水平的评估

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摘要

A survey of the radiofrequency (RF) radiation was undertaken within the premises of two television (TV) stations, TVA and TVB, in Accra, Ghana. The primary objective of this study was to determine the level of RF exposure to workers in the TV stations. A spectrum analyser, a bi-conical antenna (30-300 MHz) and a log-periodic antenna (200 MHz-2.0 GHz) were used. Results obtained indicated that the wideband electric field strength levels recorded in this work vary between 0.006 and 58.5 V m~(-1) at TVA and between 0.007 and 28.5 V m~(-1) at TVB. Compared with the results from TVB, TVA recorded relatively higher values in the 30-400 MHz range, whereas TVB produced relatively higher values in the 400 MHz-1.7 GHz range. Generally, results obtained were found to be below the occupational reference levels of the International Commission on Non-Ionizing Radiation Protection, but at some locations, the field intensity was 4.3 times higher than the reference levels for the general public.
机译：在加纳阿克拉的两个电视台（TVA和TVB）的房舍内对射频（RF）辐射进行了调查。这项研究的主要目的是确定电视台工作人员的射频辐射水平。使用频谱分析仪，双锥形天线（30-300 MHz）和对数周期天线（200 MHz-2.0 GHz）。获得的结果表明，这项工作中记录的宽带电场强度水平在TVA为0.006至58.5 V m〜（-1），在TVB为0.007至28.5 V m〜（-1）。与TVB的结果相比，TVA在30-400 MHz范围内记录的值相对较高，而TVB在400 MHz-1.7 GHz范围内记录的值较高。通常，发现所获得的结果低于国际非电离辐射防护委员会的职业参考水平，但是在某些位置，场强是普通公众参考水平的4.3倍。

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  • 来源
    《Radiation Protection Dosimetry》 |2016年第3期|419-426|共8页
  • 作者

    S. Osei; J. K. Amoako; J. J. Fletcher;

  • 作者单位

    Radiation Protection Institute, Ghana Atomic Energy Commission, PO Box LG 80, Legon, Accra, Ghana;

    Radiation Protection Institute, Ghana Atomic Energy Commission, PO Box LG 80, Legon, Accra, Ghana,Graduate School of Nuclear and Allied Sciences, University of Ghana, Legon, Accra, Ghana;

    Graduate School of Nuclear and Allied Sciences, University of Ghana, Legon, Accra, Ghana;

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