فایل ورد Failure Analysis of Thermowell’s Support Pipes Installed on the Main Feed Gas Pipelines of the South Pars Gas Complex

لینک دانلود

 فایل ورد Failure Analysis of Thermowell’s Support Pipes Installed on the Main Feed Gas Pipelines of the South Pars Gas Complex دارای 14 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است

فایل ورد فایل ورد Failure Analysis of Thermowell’s Support Pipes Installed on the Main Feed Gas Pipelines of the South Pars Gas Complex  کاملا فرمت بندی و تنظیم شده در استاندارد دانشگاه  و مراکز دولتی می باشد.

توجه : در صورت  مشاهده  بهم ريختگي احتمالي در متون زير ،دليل ان کپي کردن اين مطالب از داخل فایل ورد مي باشد و در فايل اصلي فایل ورد Failure Analysis of Thermowell’s Support Pipes Installed on the Main Feed Gas Pipelines of the South Pars Gas Complex،به هيچ وجه بهم ريختگي وجود ندارد


بخشی از متن فایل ورد Failure Analysis of Thermowell’s Support Pipes Installed on the Main Feed Gas Pipelines of the South Pars Gas Complex :


سال انتشار : 1395

نام کنفرانس یا همایش : دهمين همايش مشترک و پنجمين کنفرانس بين المللي انجمن مهندسي مواد و متالورژي و انجمن علمي ريخته گري ايران

تعداد صفحات :14

چکیده مقاله:

Critical failures of the gas pipelines or the refinery facilities could lead to the plant shutdown. In fact, stopping the gas production and causing the environmental impacts are the two serious consequences of an unexpected gas plant shutdown. The present work studies the failure of thermowell weldments occurred in the main gas pipelines of a gas refinery plant that made a number of emergency shutdowns happen. After the failure description and an extensive literature survey, visual and penetrant tests were performed to identify the crack locations. Then, the fractured surface and its cross-sections were investigated by stereo, optical and scanning electron microscopes. Besides, atomic emission spectroscopy was used to evaluate the chemical composition of the different weld zones. Also, their micro-hardness profile was determined. Based on the results, there were not any unusual issue in the micro-structure, micro-hardness profile, and chemical composition of the weld zones. But, the macroscopic images showed the rachet and beach marks that were initiated from the lack of penetration defects and propagated through a fatigue process. At the end, a repair procedure was performed and some hints were proposed to mitigate the fatigue failure

توضیحات بیشتر