Total radiation dose to workers through inhalation, ingestion and external exposure pathways is assessed in the following scenarios: Where workers are exposed on a shift basis to radio-nuclides from existing or future mining or other operations. Where workers are…
The planning phase of a new workplace, such as a mining extension or new mine, must incorporate the radiation safety aspect, and the design will optimise production and safety aspects. In this regard, a pre-operational estimate of expected radon and…
Elevated radon and external radiation levels exist in work environments containing traces of uranium e.g. underground or surface mines. The levels may be natural, or enhanced by human activity. Mining and other workforce members are exposed and their radiological safety…
Internationally accepted dose modelling methods are used to assess incremental radiation dose through inhalation, ingestion and external exposure pathways in the following scenarios: Public members exposed on a lifetime basis to radio-nuclides from existing mining operations, and from contaminated land…
PARC Scientific designs and conducts public and environmental radon measurement surveys. Surveys make extensive use of integrating etched- track monitors to obtain the important long-term average exposure level necessary for radon dose assessment. Surveys are based on a significant level…
Radon exhalation rate, or flux, is the rate of radon release from a source of radon. An accurate radon source term value is crucial to obtain realistic estimates from Atmospheric Dispersion Modelling codes. Common flux measurement methods provide short-term values…
Radio-active gases and particles are released from various sources e.g. tailings storage facilities, contaminated sites and underground ventilation shafts. The atmospheric dispersion of the airborne pollutants is evaluated through Atmospheric Air Dispersion Modelling, using the emission rates and meteorological data…
Land sites historically overlain by e.g. tailings storage facilities and mine dumps are potentially contaminated by radioactive residues. Regulations require the issue of a radiological site clearance certificate before such a site may be used for public habitation. This entails…