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Radiation Protection in the Mineral Extraction Industry: by National Council on Radiation Protection and Measurements

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By National Council on Radiation Protection and Measurements

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Additional info for Radiation Protection in the Mineral Extraction Industry: Recommendations of the National Council on Radiation Protection and Measurements (Ncrp, No)

Sample text

The tailings should be handled and distributed with remote equipment, where possible, to minimize handling by individuals. Spraying equipment may be required t o minimize the drying out of tailings and the resultant dust accumulation and to control dispersion of radionuclides. In some cases, covering the wastes to control the spread of contamination may be practicable. Appropriate survey equipment should be provided for determining the extent and type of contamination on and in the other solid waste materials.

2 Facility Layout The proper layout of facilities is a critical factor in reducing the likelihood and magnitude of exposure to radiation. If the material being processed has the potential for causing exposures approaching the nonoccupational exposure limits, the facility should be designed to isolate areas where the exposure potential is increased, to maintain separation of contaminated and noncontaminated areas and to control the movement of personnel into and out of those areas. These control measures may also be appropriate as the concept of ALARA is incorporated into the facility design process.

An external radiation monitoring program should provide an overall assessment of radiation levels, identify the locations of the higher radiation levels and provide radiation dose estimates for the individuals in these areas. 1 Characterization of the Workplace Continuous area monitoring is employed in many radiation facilities. However, in the mineral extraction industries, external radiation monitoring will usually be limited to surveys with portable gamma survey meters andlor integrated measurements with passive gamma radiation monitors.

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