کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
1740412 1521754 2015 5 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Radiological aspects and behavior of spent fuel considering long-term storage
ترجمه فارسی عنوان
جنبه های رادیولوژیکی و رفتار مصرف سوخت با توجه به ذخیره سازی درازمدت
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کلمات کلیدی
ذخیره سازی درازمدت، روکش درجه حرارت، استرس هوپ، میزان دز
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی


• We generated generic models of a spent fuel storage cask and fuel assemblies.
• We performed thermal and mechanical analyses, burnup and dose rate calculations.
• Investigations focus on long-term behavior of rod temperatures and stresses.
• Hydride reorientation could occur when burnup exceeds 55 GWd/tHM.

For spent nuclear fuel management in Germany, the concept of dry interim storage in dual purpose casks before direct disposal is applied. Current operation licenses for storage facilities have been granted for a storage time of 40 years. Due to the current delay in site selection, an extension of the storage time seems inevitable. In consideration of this issue, GRS performed burnup calculations, thermal and mechanical analyses as well as particle transport and shielding calculations for UO2 and MOX fuels stored in a cask to investigate long-term behavior of the spent fuel related parameters and the radiological consequences. It is shown that at the beginning of the dry storage period, cladding hoop stress levels sufficient to cause hydride reorientation could be present in fuel rods with a burnup higher than 55 GWd/tHM. The long-term behavior of the cladding temperatures indicates the possibility of reaching the ductile-to-brittle transition temperature during extended storage scenarios. Surface dose rates are 3 times higher when a cask is partially loaded with 4 MOX fuel assemblies. Due to radioactive decay, long-term storage will have a positive impact on the radiological environment around the cask.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Nuclear Energy - Volume 84, September 2015, Pages 1–5
نویسندگان
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