کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8069243 1521123 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Radiocarbon mass balance for a Magnox nuclear power station
ترجمه فارسی عنوان
تعادل توده رادیو کربن برای یک نیروگاه هسته ای مغنکس
کلمات کلیدی
راکتورهای مگنوک، کربن 14، گرافیت، مدل سازی فعال سازی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Nuclear power generation in the United Kingdom is based principally on graphite-moderated gas-cooled reactors. The mass of irradiated graphite associated with these reactors, including material from associated experimental, prototype and plutonium production reactors, exceeds 96,000 tonnes. One of the principal long-lived radionuclides produced during graphite irradiation is radiocarbon (C-14). Its potential as a hazard must be taken into account in decommissioning and graphite waste management strategies. While C-14 production processes are well-understood, radionuclide distributions and concentrations need to be characterised. A common misconception is that generic statements can be made about C-14 precursors and their location. In fact, the composition of the original manufactured material, the chemical environment of the graphite during service and its irradiation history will all influence C-14 levels. The analysis presented here provides the first assessment of the principal C-14 activation pathways for a UK Magnox reactor. Activation modelling has been used to predict C-14 production rates in both the graphite core and the carbon dioxide coolant over a selected period of operation and the results compared with monitored site C-14 discharges. Principal activation routes have been identified, which should inform future graphite waste management strategies relating to radiocarbon.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 75, January 2015, Pages 665-671
نویسندگان
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