کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7965369 1514181 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cladding stress during extended storage of high burnup spent nuclear fuel
ترجمه فارسی عنوان
استحکام پوسته در طول ذخیره سازی طولانی از سوخت هسته ای با سوختگی بالا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
چکیده انگلیسی
In an effort to assess the potential for low temperature creep and delayed hydride cracking failures in high burnup spent fuel cladding during extended dry storage, the U.S. NRC analytical fuel performance tools were used to predict cladding stress during a 300 year dry storage period for UO2 fuel burned up to 65 GWd/MTU. Fuel swelling correlations were developed and used along with decay gas production and release fractions to produce circumferential average cladding stress predictions with the FRAPCON-3.5 fuel performance code. The resulting stresses did not result in cladding creep failures. The maximum creep strains accumulated were on the order of 0.54-1.04%, but creep failures are not expected below at least 2% strain. The potential for delayed hydride cracking was assessed by calculating the critical flaw size required to trigger this failure mechanism. The critical flaw size far exceeded any realistic flaw expected in spent fuel at end of reactor life.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 464, September 2015, Pages 304-312
نویسندگان
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