Indigenous Passive Personal Radon (222Rn) Dosimeter for Use in Uranium Mines of India

IF 1 4区 工程技术 Q4 INSTRUMENTS & INSTRUMENTATION MAPAN Pub Date : 2024-01-09 DOI:10.1007/s12647-023-00714-1
V. N. Jha, S. K. Jha, Rajesh Kumar, R. L. Patnaik, M. K. Singh, M. S. Kulkarni, D. K. Aswal
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Abstract

Underground uranium mines, in particular, is associated with radiological conditions normally not anticipated in other mining industries. Depending on the grade and characteristics of the uranium deposit, the radiological hazard considerations may widely vary. Although short lived radon progeny are the major contributor of individual dose to the miners, dose assessment using their activity concentration data is normally avoided. Mine dust, diesel fumes, high humidity and seepage from the surrounding surface poses additional difficulty in direct estimation of radon progeny activity concentration. Individual doses are computed through radon (222Rn) monitoring data and equilibrium ratio (F) between radon and its short lived progeny. Both ambient and passive techniques are used in Indian uranium mines for the dose assessment but the passive technique is preferred over the ambient as the later can explicitly account the individual worker during its uses. The device, Personal Radon Dosimeter (PRD), based on nuclear track registry on a LR-115 Kotak film has indigenously been designed after detailed scientific studies. Basic features of this device, their uses, track registry and calibration aspects along with dose assessment methodology of uranium miners are provided in the paper.

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印度铀矿使用的本地被动式个人氡(222Rn)剂量计
尤其是地下铀矿,其放射性条件通常是其他采矿业无法预料的。根据铀矿床的等级和特征,放射性危害的考虑因素可能会有很大不同。虽然短寿命氡子体是矿工个人剂量的主要来源,但通常避免使用其放射性浓度数据进行剂量评估。矿尘、柴油烟雾、高湿度和周围地表的渗流给直接估算氡原活度浓度带来了额外的困难。个人剂量是通过氡(222Rn)监测数据和氡及其短寿命原体之间的平衡比(F)来计算的。在印度铀矿中,环境技术和被动技术都被用于剂量评估,但被动技术比环境技术更受欢迎,因为后者可以在使用过程中明确考虑到工人的个体情况。个人氡剂量计(PRD)装置基于 LR-115 Kotak 薄膜上的核轨道登记,是经过详细的科学研究后自行设计的。本文介绍了该装置的基本特征、用途、轨迹登记和校准方面以及铀矿工的剂量评估方法。
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来源期刊
MAPAN
MAPAN 工程技术-物理:应用
CiteScore
2.30
自引率
20.00%
发文量
91
审稿时长
3 months
期刊介绍: MAPAN-Journal Metrology Society of India is a quarterly publication. It is exclusively devoted to Metrology (Scientific, Industrial or Legal). It has been fulfilling an important need of Metrologists and particularly of quality practitioners by publishing exclusive articles on scientific, industrial and legal metrology. The journal publishes research communication or technical articles of current interest in measurement science; original work, tutorial or survey papers in any metrology related area; reviews and analytical studies in metrology; case studies on reliability, uncertainty in measurements; and reports and results of intercomparison and proficiency testing.
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