The technologically enhanced naturally occurring radioactive materials (TENORM), i.e., ⁴⁰K, ²³²Th, and ²²⁶Ra in waste petroleum scale, sludge, and produced water in Ma’rib Refinery - Yemen - were measured using spectroscopy with HPGe detector. To determining the radiation hazard of TENORMs in waste petroleum, The radium equivalent activity (Ra_eq), gamma-ray index (I_γ), external radiation hazard index (H_ex), internal radiation hazard index (H_in), absorbed dose rate (ADR), annual effective dose (AED), annual gonadal dose equivalent (AGDE), alpha index (I_α) excess lifetime cancer risk (ELCR), and activity utilization index (AUI) are calculated to determine the radiation hazard of TENORMs in waste petroleum. The radiological data were analyzed using multivariable statistical methods to determine the discrepancies and similarities between the various samples. Frequency distributions have been studied for all radionuclides. There were fourteen variables measured in the data studied. The results of the Pearson correlation coefficient showed a positive correlation between all concentrations of TENORMs and all radiation hazard indicators. Factor analysis results in a two-component representation of the data obtained from waste petroleum samples. The dendrogram resulting from the Hierarchical Cluster Analysis divided the twenty-eight waste petroleum samples into three main groups using fourteen variables.

在技​​术上得到增强的天然放射性物质（TENORM），即也门Ma'rib炼油厂的废石油垢，污泥和产出水中的⁴⁰ K，²³² Th和²²⁶ Ra，是通过使用HPGe探测器的光谱法进行测量的。于确定在废石油，镭相当的活性（RA TENORMs的辐射危害_当量），伽玛射线指数（I _γ），外部辐射危险指数（H _EX），内部辐射危险指数（H_中），吸收剂量率（ADR），年有效剂量（AED），年性腺等效剂量（AGDE），α指数（_Iα）计算终生癌症风险（ELCR）和活动利用指数（AUI），以确定废石油中TENORM的辐射危害。使用多变量统计方法对放射线数据进行分析，以确定各种样品之间的差异和相似性。已经研究了所有放射性核素的频率分布。在研究的数据中测量了十四个变量。皮尔逊相关系数的结果表明，所有TENORM浓度与所有辐射危害指标之间均呈正相关。因子分析导致从废石油样品中获得的数据由两部分表示。层次聚类分析得出的树状图使用14个变量将28个废弃石油样品分为三个主要组。