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KMID : 0364920130380020052
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Journal of Radiation Protection and Research
2013 Volume.38 No. 2 p.52 ~ p.59
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Gross Beta Screening and Monitoring Procedure using Urine Bioassay for Radiation Workers of Radioisotope Production Facilities
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Yoon Seok-Won
Kim Mi-Ryeong
Park Se-Young
Park Min-Jeong
Yoo Jae-Ryong
Jang Han-Ki
Ha Wi-Ho
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Abstract
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The internal contamination screening method using gross beta measurement was performed for radioisotope workers. 24 h and spot urine samples from workers of medical isotope production facilities were collected and measured. Most of the results were similar with the background level of gross beta activity except for a specific worker. Gross beta activity was slightly increased in several hours after finishing work. And the environmental factor of production facilities causing internal contamination were estimated based on screening results. The additional detailed internal dose assessment must be followed after the screening for protection of workers. Moreover, a procedure was established to apply a simple internal contamination assessment for radiation workers.
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KEYWORD
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Gross beta measurement, Radioisotope production facilities, Radiation workers, Urine bioassay
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