کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
790758 1466096 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Probability assessment of burst limit state due to internal corrosion
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Probability assessment of burst limit state due to internal corrosion
چکیده انگلیسی

The failure probability of an oil and gas pipeline, with longitudinally oriented internal corrosion defects, due to burst from internal operating pressure can be estimated through characterization of defect geometry, internal corrosion growth rate, and remaining mechanical hoop strength capacity. A number of candidate models to estimate the corrosion defect depth growth rate were evaluated. Defining a corrosion defect length, the corrosion feature geometry was integrated within burst pressure models, which have been adopted by oil and gas industry standards, codes or recommended practices. On this basis the burst pressure failure probability of a pipeline with internal corrosion defects can be estimated. A comparative analysis of pipe burst limit states and failure estimates were conducted, using Monte Carlo simulation and First Order Second Moment (FOSM) methods. Results from the comparative analysis closely matched and demonstrated consistent trends. Based on the probabilistic assessment, the relative conservatism between burst pressure models was analyzed and recommendations provided to assist designers on model selection.


► We studied failure probability of pipeline due to internal corrosion defects.
► We compared the burst pressure models of recommended codes/standard or individual models
► Discussed relative conservatism of recommended codes/standards or individual models.
► Recommendations also provided to assist designer on model selection.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pressure Vessels and Piping - Volume 89, January 2012, Pages 48–58
نویسندگان
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