Northampton Electronic Collection of Theses and Research

Time activity modelling of domestic exposures to radon

Briggs, D. J., Denman, A. R., Gulliver, J., Marley, R. F., Kennedy, C. A., Phillips, P. S., Field, K. and Crockett, R. G. M. (2003) Time activity modelling of domestic exposures to radon. Journal of Environmental Management. 67(2), pp. 107-120. 1095-8630.

Item Type: Article
Abstract: Radon gas occurs naturally in the environment with a variable distribution. In some areas radon concentrates sufficiently within the built environment that it is considered as a public health risk. It is possible, successfully, to reduce radon levels in the built environment, and it has been shown that such remediation programmes can be justified in terms of the costs and benefits accruing. However, the estimated dose received by people in their homes depends on the time spent indoors. The research presented here uses data derived from time activity surveys in Northamptonshire, together with radon data from a representative home, to model potential exposures for different population sub-groups. Average home occupancy ranged from 14.8 h (probable error 2.5 h) for students to 17.7 (3.1) h for adults; schoolchildren spent an average of 14.9 (1.2) h at home. Over a quarter of adults, however, were in the home for 22 h on more. These differences in occupancy patterns lead to substantial differences in radon exposure. In a home with an average hourly ground floor radon concentration of 467 Bq m−3, modelled hourly average exposures ranged from ca. 250 Bq m−3 for students and school children, to over 340 Bq m−3, for women based at home. Modelled exposures show a non-linear association with total time spent at home, suggesting that exposure estimates based on linear models may provide misleading estimates of health risks from radon and the potential benefits of radon remediation. Highest hourly exposures are likely to be experienced by people with highly occupancy, living in single-storey, ground floor accommodation (for example, the elderly the infirm and non-working young mothers). Since these may be least aware of radon risks, and least able to take up remediation measures, they should be specifically targeted for radon monitoring and for assistance in remediation schemes
Additional Information: UoA 12, RAE 2008
Uncontrolled Keywords: Radon, occupancy, radiation dose, lung cancer, exposure assessment, time activity
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences > GE300 Environmental management
R Medicine > RA Public aspects of medicine > RA565 Environmental health
T Technology > TD Environmental technology. Sanitary engineering > TD885.5 Radon pollution
Creators: Briggs, David J, Denman, Anthony R, Gulliver, John, Marley, R F, Kennedy, C A, Phillips, Paul S, Field, K and Crockett, Robin G M
Publisher: Elsevier
Northamptonshire and East Midlands: Environment
Faculties, Divisions and Institutes: University Faculties, Divisions and Research Centres - OLD > School of Applied Sciences (to 2009) > Environmental Science (to 2009)
Date: 1 February 2003
Date Type: Publication
Page Range: pp. 107-120
Journal or Publication Title: Journal of Environmental Management
Volume: 67
Number: 2
Language: English
DOI: https://doi.org/10.1016/S0301-4797(02)00159-7
ISSN: 1095-8630
Status: Published / Disseminated
Refereed: Yes
Related URLs:
URI: http://nectar.northampton.ac.uk/id/eprint/44

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