کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1739207 1016838 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new approach to assessment and management of the impact from medical liquid radioactive waste
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
A new approach to assessment and management of the impact from medical liquid radioactive waste
چکیده انگلیسی

The Swedish regulations concerning disposal of clinical radioactive waste are currently under revision and a graded approach is proposed for risk limitation purposes. To assist the revision procedures, a screening study was performed to estimate public exposures from liquid releases from hospitals to public sewers. The results showed that doses to sewage workers were above the dose constraint of 100 μSv a−1 especially for 131I and 99mTc. Hence, a dynamic model, LUCIA, was developed for realistic assessments in which radionuclide transportation in sewers was modelled. Probabilistic simulations were performed to obtain probability distributions of radionuclide concentrations in sludge. Concurrently, estimates of the effective doses to sewage workers decreased significantly and were below 10 μSv a−1 except for 111In and 131I. However, the Kd-coefficients representing the partition of radioactivity between water and sludge in sewers are highly uncertain for 111In. As shown by sensitivity studies, these values are the major determinant of the exposures in sewers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Radioactivity - Volume 99, Issue 10, October 2008, Pages 1572–1577
نویسندگان
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