Bibliographic Citation
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| Title | Indirect measurement sub floor radon using passive detectors |
| Creator/Author | Chittaporn, P. ; Harley, N.H. [New York Univ. School of Medicine, NY (United States)] |
| Publication Date | 1996 Jun 01 |
| OSTI Identifier | OSTI ID: 394057 |
| Report Number(s) | CONF-9607135-- |
| DOE Contract Number | FG02-87ER60547 |
| Other Number(s) | Journal ID: HLTPAO; ISSN 0017-9078; TRN: TRN: 96:005375-0147 |
| Resource Type | Journal Article |
| Resource Relation | Journal Name: Health Physics; Journal Volume: 70; Journal Issue: Suppl.6; Conference: 41. Annual Meeting of the Health Physics Society, Seattle, WA (United States), 21-25 Jul 1996; Other Information: PBD: Jun 1996 |
| Subject | 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS;56 BIOLOGY AND MEDICINE, APPLIED STUDIES; SOILS; RADIATION MONITORING; WIND; CORRELATIONS; TEMPERATURE DEPENDENCE; HOUSES; RADON 222; BASEMENTS; RADIATION DETECTORS |
| Description/Abstract | Hourly {sup 222}Rn measurements have been made in an 80-y-old wood frame house for about 6 y. The average {sup 222}Rn concentration in the basement is 40 Bq m{sup -3}. Two holes were drilled in the slab and standard 150 cfm fans installed via a short length of PVC pipe. The air from beneath the slab was blown directly into the basement to indirectly study the long term variability in the subslab gas concentration. Passive CR-39 {sup 222}Rn alpha track detectors of our design were placed weekly in the fan exit air to estimate the average subslab gas concentration. Instantaneous subslab gas {sup 222}Rn concentration was measured directly using scintillation flasks filled from adjacent floor ports once per week. The agreement with the indirect measurements was good. The average weekly basement {sup 222}Rn concentration correlated well with the weekly integrated soil gas {sup 222}Rn concentration. An increase from 44 to 74 Bq m{sup -3} in basement air corresponded to an increase of 1.8 to 3.7 MBq m{sup -3} in subslab soil gas. An increase in weekly average temperature from 10{degrees} to 30{degrees}C increased the integrated soil gas concentration from 1.8 to 3.7 MBq m{sup -3}, and an increase in average wind speed from calm to 0.5 in s{sup -1} decreased the subslab concentration from 3.7 to 1.8 MBq m{sup -3}. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: pp. 78c |
| System Entry Date | 2008 Feb 04 |
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Last Updated: 11/19/2009