First Results of the Indoor Natural Radiation Survey in Italy

Bochicchio, Francesco; Venuti, G. Campos; Mancioppi, S.; Piermattei, S.; Risica, S.; Tommasino, L.; Torri, G.

doi:10.1093/rpd/45.1-4.459

Cited by 3 publications

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“…The arithmetic mean was found to be 327 ± 102 nGy h −1 , while the lowest value measured was 136 nGy h −1 and the highest 702 nGy h −1 . The mean value of the indoor gamma dose rate obtained is higher than the national average, which is 105 ± 10 nGy h −1 (Bochicchio et al, 1996a). This result could be due to the presence of active volcanoes in the coastal area of the Province of Naples, with the consequence of an elevated presence of undifferentiated pyroclastic rocks (Ortolani and Pagliuca, 1987), widely used in building construction.…”

Section: Indoor Gamma Dose Ratementioning

confidence: 85%

“…The estimated annual effective dose by the gamma dose rate in air was found to be 1.6 mSv y −1 , which is higher than the Italian national average (0.4) mSv y −1 (Bochicchio et al, 1996a). Moreover, taking into account the UNSCEAR model, the annual effective dose to the general population due to radon was calculated using the following formula:…”

Section: Radiological Effect Estimates Of the Indoor Gamma Dose Rate ...mentioning

confidence: 99%

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Indoor radon concentration and gamma dose rate in dwellings of the Province of Naples, South Italy, and estimation of the effective dose to the inhabitants

et al. 2016

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The indoor radon concentration was measured in 471 dwellings in the Province of Naples. Radon concentration measurements were carried out using LR-115 passive alpha track detectors (SSNTDs) that were exposed for two consecutive semesters. The annual average radon concentration in the dwellings was found to vary from 21 to 722 Bq m −3 with an average value of 107 ± 75 Bq m −3 . In about 93% of the dwellings the radon concentrations were found to be below 200 Bq m −3 , which is the recommended level by Italian law for new buildings. Simultaneously with the radon concentration measurements, indoor gamma dose rates were measured in 388 dwellings. Indoor gamma dose rates were measured using Thermoluminescent Dosimeters (TLDs) exposed in each dwelling for six months. The arithmetic mean value was found to be 327 ± 102 nGy h −1 , after the subtraction of the cosmic ray contribution. A weak correlation between the indoor radon concentration and gamma dose rate was found. The correlation between indoor radon measurements and gamma dose rates and the same building characteristics was also studied.

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Section: Indoor Gamma Dose Ratementioning

confidence: 85%

Section: Radiological Effect Estimates Of the Indoor Gamma Dose Rate ...mentioning

confidence: 99%

Indoor radon concentration and gamma dose rate in dwellings of the Province of Naples, South Italy, and estimation of the effective dose to the inhabitants

et al. 2016

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“…A total of 984 and 329 schools respectively had radon concentrations greater than 200 and 400 Bq m −3 in one or more locations (figure 4). Results from a number of radon surveys in schools that have been carried out in Europe and the US have been published (Bochicchio et al 1992, Poffijn et al 1992, Phillips et al 1992, Vaupotic et al 1994, Durcik et al 1997. Generally these surveys are not as comprehensive as the Irish survey, with only a limited number of schools surveyed, and not all occupied rooms were tested.…”

Section: Radon Concentrations In Schoolsmentioning

confidence: 99%

Radon in Irish schools: the results of a national survey

Synnott

Hanley²,

Fenton³

et al. 2006

J. Radiol. Prot.

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This paper presents the results of a survey of radon concentrations in Irish primary and post-primary schools. The objective of this survey was to assess the distribution of radon in Irish schools and to identify those requiring remedial work to reduce radon exposure to children and staff. All primary and post-primary schools were invited to participate in the survey. Indoor radon concentrations were measured during the academic year using integrating passive alpha track-etch detectors with a measurement period from three to nine months. The survey was carried out on a phased basis from 1998 to 2004 and is one of the most comprehensive of its kind undertaken in Europe. Measurements were completed in 38 531 ground floor classrooms and offices in 3826 schools, representing over 95% of the approximate 4000 primary and post-primary schools in Ireland. Of these, 984 schools had radon concentrations greater than 200 Bq m(-3) in 3028 rooms and 329 schools had radon concentrations in excess of 400 Bq m(-3) in 800 rooms. The average radon concentration in schools was 93 Bq m(-3). This results in an annual average effective dose to an Irish child from exposure to radon of 0.3 mSv per year, assuming that the long-term radon concentration is equal to the radon concentration present during the working hours and that the annual average occupancy is 1000 h per year. A programme of remediation of schools with radon concentrations above 200 Bq m(-3) has been put in place.

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