Modelling the dispersion of radon-222 from a landform covered by low uranium grade waste rock

Simple item page
dc.contributor.authorDoering, Cen_AU
dc.contributor.authorMcMaster, SAen_AU
dc.contributor.authorJohansen, MPen_AU
dc.date.accessioned2024-12-19T21:25:36Zen_AU
dc.date.available2024-12-19T21:25:36Zen_AU
dc.date.issued2018-12en_AU
dc.date.statistics2024-12-11en_AU
dc.description.abstractThe dispersion of 222Rn from the planned remediation of the Ranger U mine in the wet-dry tropics of Northern Australia was modelled. Dry and wet season contour maps of 222Rn dose normalised to 226Ra activity concentration in the proposed waste rock substrate on the remediated landform were developed. Three example exposure scenarios were assessed based on an anticipated waste rock 226Ra activity concentration of 800 Bq kg−1. The estimated above-background annual dose from 222Rn to hypothetical receptors at the Aboriginal community at Mudginberri (∼10 km NNW) was 0.005 mSv and at the township of Jabiru (∼7 km W) was 0.033 mSv. The estimated above-background annual dose for the hypothetical worst case scenario, representing a receptor 1 km WNW of the landform centroid during the dry season and at the centroid during the wet season, was 0.13 mSv. Variability analysis on the 20 y meteorological dataset used in the dispersion modelling showed that the dry and wet season 222Rn dose predictions in any single year could be approximately double those of an average year, which suggests that estimates of average 222Rn dose should potentially be doubled if the assessment aim is to demonstrate compliance with the public dose limit. © 2018 Published by Elsevier Ltd.en_AU
dc.format.mediumPrint-Electronicen_AU
dc.identifier.citationDoering, C., McMaster, S. A., & Johansen, M. P. (2018). Modelling the dispersion of radon-222 from a landform covered by low uranium grade waste rock. Journal of Environmental Radioactivity, 192, 498-504. doi:10.1016/j.jenvrad.2018.07.024en_AU
dc.identifier.issn0265-931Xen_AU
dc.identifier.issn1879-1700en_AU
dc.identifier.journaltitleJournal of Environmental Radioactivityen_AU
dc.identifier.pagination498-504en_AU
dc.identifier.urihttps://doi.org/10.1016/j.jenvrad.2018.07.024en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15841en_AU
dc.identifier.volume192en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectUraniumen_AU
dc.subjectRadon 222en_AU
dc.subjectDispersionsen_AU
dc.subjectWastesen_AU
dc.subjectRocksen_AU
dc.subjectAustraliaen_AU
dc.subjectSeasonsen_AU
dc.subjectUranium minesen_AU
dc.subjectAustraliaen_AU
dc.subjectNorthern Territoryen_AU
dc.subjectDose ratesen_AU
dc.subjectDataen_AU
dc.subjectBioremediationen_AU
dc.subjectWeatheren_AU
dc.subjectRadionuclide migrationen_AU
dc.titleModelling the dispersion of radon-222 from a landform covered by low uranium grade waste rocken_AU
dc.typeJournal Articleen_AU
dcterms.dateAccepted2018-07-25en_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.66 KB
Format:
Plain Text
Description:
Download
Collections
Journal Articles