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The Area Measurements in the Tritium Laboratory Within Nipne Magurele
Fusion Science and Technology ( IF 0.9 ) Pub Date : 2020-02-03 , DOI: 10.1080/15361055.2020.1711850
M. R. Ioan 1 , G. Bubueanu 1 , C. S. Tuta 1
Affiliation  

Abstract This paper reports the results of radiological measurements taken for the last 3 years in the controlled area and adjacent zone of the Tritium Laboratory of the the Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele. The radiological characterization has been performed by determination of total and removed tritium contamination for the following surfaces: pavement, walls, windows, radiochemical tables, radionuclide fume cupboards, glove boxes, and sinks. The fixed tritium contamination does not present representative radiological risk because beta particles emitted by tritium are unable to penetrate the skin. The removed tritium contamination represents that component of the total surface contamination that can be taken by mechanical processes. The removed contamination was analyzed as a priority because it represents the main radiological risk factor in tritium laboratories. The determination of surface contamination has been carried out by scanning of the analyzed surfaces using an LB 1230 UMo tritium surface monitor with an LB 1230 detector and by a smear test using extruded polystyrene smears followed by measurement of the removed activity with a liquid scintillation counter. The total surface contamination values, obtained by scanning, were below the detection limit of the equipment, except for radiochemical hood surfaces. The removed tritium contamination determined values are in the domain of 5 … 450 Bq/dm2. At the department level, the obtained values for surface tritium contamination are at the background level.

中文翻译:

Nipne Magurele 氚实验室的面积测量

摘要 本文报告了过去 3 年在马古雷勒霍里亚呼鲁北国家物理与核工程研究所氚实验室控制区和邻近区进行的放射学测量结果。已通过测定以下表面的总氚污染和去除的氚污染来进行放射学表征:人行道、墙壁、窗户、放射化学台、放射性核素通风橱、手套箱和水槽。固定氚污染不存在代表性的放射学风险,因为氚释放的 β 粒子无法穿透皮肤。去除的氚污染物代表了机械过程可以去除的总表面污染物的组成部分。去除的污染物被列为优先分析对象,因为它代表氚实验室的主要放射学风险因素。通过使用带有 LB 1230 检测器的 LB 1230 UMo 氚表面监测器扫描分析的表面并通过使用挤出聚苯乙烯涂片的涂片测试,然后用液体闪烁计数器测量去除的活性来确定表面污染。通过扫描获得的总表面污染值低于设备的检测极限,放射化学罩表面除外。去除的氚污染测定值在 5 … 450 Bq/dm2 范围内。在部门层面,获得的表面氚污染值处于背景水平。通过使用带有 LB 1230 检测器的 LB 1230 UMo 氚表面监测器扫描分析的表面并通过使用挤出聚苯乙烯涂片的涂片测试,然后用液体闪烁计数器测量去除的活性来确定表面污染。通过扫描获得的总表面污染值低于设备的检测极限,放射化学罩表面除外。去除的氚污染测定值在 5 … 450 Bq/dm2 范围内。在部门层面,获得的表面氚污染值处于背景水平。通过使用带有 LB 1230 检测器的 LB 1230 UMo 氚表面监测器扫描分析的表面并通过使用挤出聚苯乙烯涂片的涂片测试,然后用液体闪烁计数器测量去除的活性来确定表面污染。通过扫描获得的总表面污染值低于设备的检测极限,放射化学罩表面除外。去除的氚污染测定值在 5 … 450 Bq/dm2 范围内。在部门层面,获得的表面氚污染值处于背景水平。
更新日期:2020-02-03
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