Radon concentrations in coal mines of Baluchistan, Pakistan

Qureshi, A.A.; Kakar, Din Muhammad; Akram, Muhammad; Khattak, Nimat Ullah; Tufail, Muhammad; Mehmood, Khalid; Jamil, Khalid; Khan, H.A.

doi:10.1016/s0265-931x(99)00065-x

Cited by 50 publications

(26 citation statements)

References 3 publications

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“…Several radon dose calculation methods related to human health have been reported in the literature (Denman and Parkinson 1996;Qureshi et al 2000;Furuta et al 2002;Lario et al 2005). The annual effective dose of 222 Rn received in a cave in this study was calculated using the formula (Richon et al 2005):…”

Section: Dose Calculation and Risk Estimationmentioning

confidence: 99%

An Environmental Risk Assessment of Radon in Lantian Karst Cave of Shaanxi, China

Zhang

2008

Water Air Soil Pollut

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The radiation dose and environmental health risk of radon concentration in the Lantian karst cave of China to guides and visitors were estimated based on the continuous radon concentration monitoring. Distinct seasonal variations were observed in the radon concentration of the air inside the cave. The maximum concentration occurred in the summer, whereas the minimum radon concentration occurred during the winter. The annual average radon concentration in the caves investigated is slightly higher than the upper bound of radon action level for underground space used in China and less than the upper bound of radon action level recommended by the International Commission on Radiation Protection (ICRP) for workplaces. The annual effective dose to tour guides working in two investigated caves varies from 4.1 to 16.5mSv, depending on different equilibrium factors together with different dose conversion factors proposed in the literature. The annual maximum time that a tour guide or other worker can safely be inside the cave is estimated to be 1,250 or 2,246h, depending on whether one bases this on the high or mean radon concentration, with an equilibrium factor of one in both cases. Given the synergistic effects of smoking, tour guides who are smokers should be in the cave only 10-20% of these hours. In all cases, the annual effective doses to visitors are well below the 1mSv maximum suggested dose for a member of the public for 1 year.

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Section: Dose Calculation and Risk Estimationmentioning

confidence: 99%

An Environmental Risk Assessment of Radon in Lantian Karst Cave of Shaanxi, China

Zhang

2008

Water Air Soil Pollut

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“…Several methods have been reported to calculate the dose of radon concentration received by a person in an underground environment, most of them developed during studies related to the health problems of mineworkers (Denman and Parkinson, 1996;Qureshi et al, 2000;Furuta et al, 2002). Denman and Parkinson (1996) designed a method of estimating radiation dose from radon concentration as…”

Section: Dose Calculationmentioning

confidence: 99%

“…In order to calculate the effective dose affecting both tour guides and visitors using different scenarios of F and DCF, we used the method proposed by Qureshi et al (2000) that calculates annual WLM (Working Level Month) exposure as:…”

Section: Dose Calculationmentioning

confidence: 99%

“…Prolonged exposure to radon may cause a negative effect on our health. In fact, a high concentration of radon gas is recognized as causing lung cancer and bronchial tissue damage, as has been found in studies from uranium mines (reviewed in Qureshi et al, 2000;Yamada, 2003). Radon monitoring at highly radioactive locations such as underground mines or caves, is important to assess the radiological hazards to occupational workers and occasional visitors.…”

Section: Introductionmentioning

confidence: 99%

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Radon continuous monitoring in Altamira Cave (northern Spain) to assess user's annual effective dose

Lario

Sánchez‐Moral

Cañaveras

et al. 2005

Journal of Environmental Radioactivity

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“…According to the ICRP 65 dose conversion convention, the effective dose per unit of exposure at work is 5 mSv per WLM (ICRP 1993). Qureshi et al (2000) proposed a method to calculate the annual Working Level Month (WLM), so we used this method to calculate the effective dose affecting both tour guides and visitors:…”

Section: Dose Estimatesmentioning

confidence: 99%

Radon level and radon effective dose rate determination using SSNTDs In Sannur cave, Eastern desert of Egypt

Amin

Eissa

2007

Environ Monit Assess

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For the assessment of inhalation doses due to radon and its progeny to cavern workers and visitors, it is necessary to have information on the time integrated gas concentrations and equilibrium factors. Passive single cup dosimeters using solid state nuclear track detectors (SSNTD) is the best suited for this purpose in wadi Sannur cave, Beni Suef, Egypt. The average radon concentration measurements for the cave are 836 +/- 150 Bq m(-3) by CR-39 detectors and for equilibrium factor an overall average of all measured values was used 0.687. The effective dose for cave workers is 3.65 mSv/year while for visitors is 23 muSv/year. Comparing these values to the Ionizing Radiation Regulations (IRR) values which indicate that the estimated effective doses for workers and visitors in this cave are less than the average overall radon dose.

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Radon concentrations in coal mines of Baluchistan, Pakistan

Cited by 50 publications

References 3 publications

An Environmental Risk Assessment of Radon in Lantian Karst Cave of Shaanxi, China

An Environmental Risk Assessment of Radon in Lantian Karst Cave of Shaanxi, China

Radon continuous monitoring in Altamira Cave (northern Spain) to assess user's annual effective dose

Radon level and radon effective dose rate determination using SSNTDs In Sannur cave, Eastern desert of Egypt

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