Present study has been carried out for dose estimation from attached/unattached progeny fractions of radon and thoron using wiremesh capped DTPS/DRPS. The measured annual average attached radon/thoron progeny concentration (EERC_A and EETC_A) in the dwellings has been found to be 5.93 Bqm⁻³ and 0.43 Bqm⁻³ respectively. The calculated inhalation dose due to unattached fractions of radon progeny has been found to vary from 0.01 to 40.54 mSvy⁻¹ with mean value of 5.48 mSvy⁻¹ due to mouth breathing and from 0.01 to 9.42 mSvy⁻¹ with mean value of 1.5 mSvy⁻¹ for nasal breathing and the annual effective dose due to radon and thoron progeny has been found to vary from 0.17 to 1.11 mSvy⁻¹and from 0.06 to 0.47 mSvy⁻¹ respectively. These values lie well below the recommended safe range of 4 mSvy⁻¹ at work places and 14 mSvy⁻¹ at residential places (ICRP (International Commission on Radiological Protection) in Radiological protection against radon exposure. ICRP Publication ref 4836-9756-8598. ICRP, Stockholm, 2018). Hence, the indoor air in the study area is safe for breathing and poses no radiological health risk to the residents.

目前的研究是使用金属丝网加盖的 DTPS/DRPS 对氡和钍的附着/未附着后代部分的剂量估计进行的。已发现在住宅中测量的年平均附着氡/钍后代浓度（EERC _A和EETC _A）分别为5.93 Bqm ^-3和0.43 Bqm ^-3。已发现由氡子体的未附着部分引起的计算吸入剂量在 0.01 到 40.54 mSvy ^{-1 之间}变化，由于口呼吸的平均值为 5.48 mSvy ^-1和从 0.01 到 9.42 mSvy ^-1的平均值为 1.5 mSvy ^{- 1}鼻呼吸和氡和钍后代的年有效剂量分别在 0.17 至 1.11 mSvy ^-1和 0.06 至 0.47 mSvy ^{-1 之间变化}。这些值远低于工作场所4 mSvy ^-1和住宅场所14 mSvy ^-1的推荐安全范围（ICRP（国际放射防护委员会）在防止氡暴露的放射防护中。ICRP 出版物参考 4836-9756-8598。国际放射防护委员会，斯德哥尔摩，2018 年）。因此，研究区的室内空气可安全呼吸，对居民不构成放射性健康风险。