Internal Report 527
Supervising Scientist Division
About the report
This report describes the results of a study aiming at measuring the geographical variability of airborne radon concentration at the rehabilitated Nabarlek mine site in Western Arnhem Land. Passive radon monitors (PRMs) were supplied by Radiation Detection Systems, Adelaide, and deployed at Nabarlek from June 7 to September 14, 2005, during a period of no rainfall.
This sub-project is part of the larger project ‘Radiological impact assessment of the rehabilitated Nabarlek mine site’, which aims at advancing Key Knowledge Need 4.2.1: ‘Overall assessment of the rehabilitation success at Nabarlek’. The measurements are required to develop a more comprehensive dose model for Nabarlek, which takes the geographical variability of airborne radon concentration into account. The temporal variability of radon concentrations on site has been measured earlier, for the best part of three years (1997-99) and results are published in a separate internal report (Bollhöfer et al 2004).