کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
790897 1466114 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Welding overlay analysis of dissimilar metal weld cracking of feedwater nozzle
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Welding overlay analysis of dissimilar metal weld cracking of feedwater nozzle
چکیده انگلیسی

Inspection of the weld between the feedwater nozzle and the safe end at one Taiwan BWR showed axial indications in the Alloy 182 weld. The indication was sufficiently deep that continued operation could not be justified considering the crack growth for one cycle. A weld overlay was decided to implement for restoring the structural margin. This study reviews the cracking cases of feedwater nozzle welds in other nuclear plants, and reports the lesson learned in the engineering project of this weld overlay repair. The overlay design, the FCG calculation and the stress analysis by FEM are presented to confirm that the Code Case structural margins are met. The evaluations of the effect of weld shrinkage on the attached feedwater piping are also included. A number of challenges encountered in the engineering and analysis period are proposed for future study.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pressure Vessels and Piping - Volume 87, Issue 1, January 2010, Pages 26–32
نویسندگان
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