Admissibility of External Cracks in a Pipeline API X60 Using the SINTAP Procedure

Mohamed Benguediab,Kaddour Bahram,Benattou Bouchouicha,Abdelkader Slimane

doi:10.3311/ppme.10516

Mohamed Benguediab, Kaddour Bahram + Show 2 more

Open Access

https://doi.org/10.3311/ppme.10516

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Abstract

In this paper we tried to apply the failure assessment diagram method on an API X60 pipeline under two pressures 70 and 90 bar, this work will be divided into two parts; the first part will be devoted to modeling and simulation of a pipeline under pressure 70/90 bar. With abaqus software to determine the stress intensity factor of several ratios, The second part will focus on the exploitation of these results in order to draw the diagram of evaluation of the failure (FAD), once finished, We can pronounce on the vulnerability of the cracks which can cause the ruin of the pipeline to study, on mode of ruin and proposed safety factors.

Highlights

Breakdown is a problem that man will have to face as long as he builds buildings or builds structures
One of the most used and most answered methods in the field of diagnosis of cracks is the SINTAP because it offers several levels of studies [2, 3], in our case we have three information, yield strength, ultimate tensile strength and The critical intensity factor, we will in the following tried to apply this method on a pipeline API X60 under pressure 70 bar and 90 bar and to make a comparison between these two cases
We will in some way tried to have if a few Cracks may not be detected during factory testing

Summary

Introduction

Breakdown is a problem that man will have to face as long as he builds buildings or builds structures. One of the most used and most answered methods in the field of diagnosis of cracks is the SINTAP because it offers several levels of studies [2, 3], in our case we have three information, yield strength, ultimate tensile strength and The critical intensity factor, we will in the following tried to apply this method on a pipeline API X60 under pressure 70 bar and 90 bar and to make a comparison between these two cases The choice of these two pressures is judicious; the pressure of 70 bar is the working pressure, and the pressure of 90 bar the minimum test pressure at the factory. If the calculated point is outside this area, the structure breaks down

J Integral and stress intensity factor

Conclusion