Abstract
The main objective of this work is to evaluate the 2013 annual radiological control results in the radiopharmaceuticals areas of the Nuclear and Energy Research Institute, IPEN/SP, and the environmental radiological impact, resulting from the practices there performed. The current evaluation was performed through the analysis of the results obtained from occupational and environmental monitoring with air samplers and TL dosimeters. All monitoring results were compared with the limits established by national standards. The radionuclides detected by air sampling (in activated carbon cartridges and filter paper) at the workplace during radioisotope production were 131 I, 99m Tc and 99 Mo, with activities concentrations values below the annual limits values. For the radioactive gaseous releases (Bq/m 3 ), the activities concentrations also remained below the maximum admissible values, excepting to 125 I release due to an unusual event occurred in a researcher laboratory, but the radiological impact to environmental was no significant. The occupational monitoring assessment was confirmed by the Environmental Radiological Monitoring Program results with air samplers and TL dosimeters. The mean annual background radiation at IPEN in 2013, according to the Environmental Radiological Monitoring Program results was 1.06 mSv. y - 1 , below the ICRP 103 recommended limit of 20 mSv.y - 1 for workers.
Highlights
The use of radioisotopes in medicine is one of the most important social applications of Nuclear Energy and IPEN (Nuclear and Energy Research Institute, São Paulo), is recognized as a national leader institution in research and development in the radiopharmaceutical area
IPEN has a rigorous program of radiological control for the radiological safety of IPEN workers and general public, through radiation protection programs in accordance with the national and international standards [1,2,3,4]
This study aims to evaluate the existing exposure situations in at radiopharmaceutical facility of IPEN/SP due to their practices
Summary
The use of radioisotopes in medicine is one of the most important social applications of Nuclear Energy and IPEN (Nuclear and Energy Research Institute, São Paulo), is recognized as a national leader institution in research and development in the radiopharmaceutical area. Radiological monitoring of a radioactive facility requires the use of various techniques for determining the radiological parameters, associated either to environmental contamination, surface contamination or radiation levels. It is desired to use the monitoring techniques which have advantages in terms of time, cost or easiness of handling while, at the same time, are sensitive enough
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