Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India.
Radiat Prot Dosimetry. 2024 Jun 22;200(10):890-900. doi: 10.1093/rpd/ncae138.
The metrological quality of a measurement is characterised by evaluating the uncertainty in the measurement. In this paper, uncertainty in personal dose measured using individual monitoring CaSO4:Dy-based thermoluminescence dosimeter badge is evaluated by application of the guide to the expression of uncertainty in measurement method. The present dose reporting quantity, whole body dose (WBD) and the proposed quantity, personal dose equivalent, Hp(10) has been used as measurands. The influence of various input quantities on the measurement were analyzed through tests that conform to the requirements of the International Electrotechnical Commission IEC 62387. The study found that the expanded uncertainties for WBD and Hp(10) measurements were 63.4% and 41.4%, respectively, corresponding to a 95% coverage probability for workplace fields covering a wide photon energy range (33-1250 keV). However, the uncertainty estimates were quite lower for the type of workplaces that are identified using the dose evaluation algorithm. The input quantities, namely, the response to a mixture of photon beam qualities and photon energy and angular dependence contribute the most to the total uncertainty.
测量的计量质量的特点是通过评估测量的不确定度来进行评价。在本文中，通过应用测量不确定度表示指南的方法，评估了使用个体监测 CaSO4:Dy 基热释光剂量计徽章测量的个人剂量的不确定度。本研究中使用了当前的剂量报告量，全身剂量（WBD）和建议的量，个人剂量当量，Hp(10)作为可测量。通过符合国际电工委员会 IEC 62387 要求的测试，分析了各种输入量对测量的影响。研究发现，WBD 和 Hp(10)测量的扩展不确定度分别为 63.4%和 41.4%，对应于涵盖宽光子能量范围（33-1250 keV）的工作场所场的 95%覆盖概率。然而，对于使用剂量评估算法确定的工作场所类型，不确定度估计值要低得多。输入量，即对混合光子束质量和光子能量和角度依赖性的响应，对总不确定度的贡献最大。
