کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7003697 | 1454934 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigating grid-to-rod fretting wear of nuclear fuel claddings using a unique autoclave fretting rig
ترجمه فارسی عنوان
تحقیق در مورد پوشیدن پوشش شبکه ای به میله ریسندگی سوخت هسته ای با استفاده از یک دستگاه اتوبوسرانی منحصر به فرد
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
چکیده انگلیسی
Fuel rods in a pressurized water nuclear reactor (PWR) experience coolant flow-induced relative motion against the grid support features, a phenomenon called grid-to-rod fretting (GTRF), which may cause progressive fretting wear damage. Wear-through of the cladding on fuel rods will leak the radioactive fuel into the coolant loop to significantly increase the radiation level in PWR primary loop and often trigger expensive Post Irradiation Examination. In this study, a unique autoclave fretting test rig was designed and fabricated to allow studying GTRF using actual cladding and grid materials. Water temperature was up to 220â¯Â°C, which was designed to mimic the environment in an industry full-assembly reactor core simulator. The contact load (0.1-1â¯N), oscillation frequency (20-30â¯Hz) and stroke (50-150â¯Âµm), and work rate (1-3â¯mW) were defined based on simulations of GTRF in an actual reactor. Using this autoclave GTRF rig, tests were conducted to learn the effect of water temperature and to investigate the wear behavior of different cladding-grid material combinations currently used in actual PWRs, including Zr alloy claddings without and with pre-oxidation against Zr alloy and Inconel grids. Higher water temperature evidently increased the cladding wear, and pre-oxidation of the Zr alloy and/or using the Inconel grid effectively reduced the wear rate. Results were correlated with the data of a full-size industry reactor core simulator in terms of both wear rate and wear scar morphology.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volumes 412â413, 15 October 2018, Pages 30-37
Journal: Wear - Volumes 412â413, 15 October 2018, Pages 30-37
نویسندگان
Sladjan Lazarevic, Roger Y. Lu, Cyrille Favede, George Plint, Peter J. Blau, Jun Qu,