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Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
Published on: October 21, 2016
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Remedial activities effectiveness verification in tailing areas.
J Kluson1, L Thinova2, M Neznal3
1Czech Technical University in Prague, Brehova 7, Prague 1 115 19, Czech Republic kluson@fjfi.cvut.cz.
Radiation Protection Dosimetry
|May 17, 2015
Summary
This study assessed radiation from uranium mining sludge basins, measuring air kerma rates and mapping radiation fields. Remediation efforts, like covering sludge basins, were evaluated for effectiveness.
Area of Science:
- Environmental Science
- Radiological Science
- Nuclear Engineering
Background:
- Uranium ore mining and processing generate radioactive sludge.
- Sludge basins pose potential environmental and health risks due to radiation.
- Long-term monitoring and assessment of these sites are crucial.
Purpose of the Study:
- To conduct a complex radiological study of a uranium ore mining sludge basin.
- To measure and map radiation fields and analyze air kerma rates.
- To evaluate the efficiency of remediation measures for sludge basins.
Main Methods:
- Field measurements of air kerma rates and radiation fields across the sludge basin area.
- In situ and laboratory gamma spectrometry to determine K, U, and Th concentrations in sludge.
- Measurement of radon concentration and exhalation rates in selected sludge profiles.
- Radiological modeling using MicroShield code to assess remediation effectiveness.
Main Results:
- Detailed mapping of radiation fields and air kerma rates at 1m height over the sludge basin area in 2009 and 2014.
- Determination of radionuclide concentrations (K, U, Th) and radon parameters within the sludge.
- Validation of remediation strategies through comparative analysis of radiological data.
- Quantitative assessment of sludge basin covering efficiency using MicroShield simulations.
Conclusions:
- The radiological study provided essential data for the analysis and design of remediation.
- The verification of remediation measures confirmed their efficiency in reducing radiation exposure.
- Modeling indicated that covering the sludge basin with inert material is an effective strategy.
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