Evaluation of localized thinning in straight carbon steel piping under internal pressure

Iman A. El Gharamti; Ahmad J. Chaaban

doi:10.1109/MedGO.2015.7330321

Evaluation of localized thinning in straight carbon steel piping under internal pressure

Not published at VTT

Rafik Hariri University

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

The Scope of this paper is directed towards examining the influence of localized wall-thinning depth ratio and internal pressure on the collapse failure of some typical pressurized straight carbon steel pipes mainly used in refineries and petro-chemical plants. The investigation was achieved by conducting a parametric study using three-dimensional elastic-plastic finite element analysis (FEA). Several standard pipe sizes (NPS-4 to 14) with various wall thinning depth ratios (up to 75% of the wall thickness) have been considered. The localized wall thinning was assumed to be uniform. Based on the results, it was shown that the elastic-plastic FEA can be used to accurately estimate the 'failure pressure' and assess the remaining strength of the pipe. In addition, the API 579 Fitness-For-Service assessment limiting pressure analysis has been considered as a basis to propose an API-modified simple way of assessing the integrity of pressurized locally thinned standard straight pipes.

Original language	English
Title of host publication	2015 Mediterranean Gas and Oil International Conference, MedGO 2015
Subtitle of host publication	Proceedings
Publisher	IEEE Institute of Electrical and Electronic Engineers
ISBN (Electronic)	9781479985722
DOIs	https://doi.org/10.1109/MedGO.2015.7330321
Publication status	Published - 16 Nov 2015
MoE publication type	A4 Article in a conference publication
Event	1st Mediterranean Gas and Oil International Conference, MedGO 2015 - Mechref, Lebanon Duration: 16 Apr 2015 → 18 Apr 2015

Conference

Conference	1st Mediterranean Gas and Oil International Conference, MedGO 2015
Country/Territory	Lebanon
City	Mechref
Period	16/04/15 → 18/04/15

Keywords

Failure
Finite element analysis
Fitness-For-Service
Inspection
Internal pressure
Local wall thinning
Plasticity
Straight pipe

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10.1109/MedGO.2015.7330321

Cite this

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title = "Evaluation of localized thinning in straight carbon steel piping under internal pressure",

abstract = "The Scope of this paper is directed towards examining the influence of localized wall-thinning depth ratio and internal pressure on the collapse failure of some typical pressurized straight carbon steel pipes mainly used in refineries and petro-chemical plants. The investigation was achieved by conducting a parametric study using three-dimensional elastic-plastic finite element analysis (FEA). Several standard pipe sizes (NPS-4 to 14) with various wall thinning depth ratios (up to 75% of the wall thickness) have been considered. The localized wall thinning was assumed to be uniform. Based on the results, it was shown that the elastic-plastic FEA can be used to accurately estimate the 'failure pressure' and assess the remaining strength of the pipe. In addition, the API 579 Fitness-For-Service assessment limiting pressure analysis has been considered as a basis to propose an API-modified simple way of assessing the integrity of pressurized locally thinned standard straight pipes.",

keywords = "Failure, Finite element analysis, Fitness-For-Service, Inspection, Internal pressure, Local wall thinning, Plasticity, Straight pipe",

author = "{El Gharamti}, {Iman A.} and Chaaban, {Ahmad J.}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 1st Mediterranean Gas and Oil International Conference, MedGO 2015 ; Conference date: 16-04-2015 Through 18-04-2015",

year = "2015",

month = nov,

day = "16",

doi = "10.1109/MedGO.2015.7330321",

language = "English",

booktitle = "2015 Mediterranean Gas and Oil International Conference, MedGO 2015",

publisher = "IEEE Institute of Electrical and Electronic Engineers",

address = "United States",

}

El Gharamti, IA & Chaaban, AJ 2015, Evaluation of localized thinning in straight carbon steel piping under internal pressure. in 2015 Mediterranean Gas and Oil International Conference, MedGO 2015: Proceedings., 7330321, IEEE Institute of Electrical and Electronic Engineers, 1st Mediterranean Gas and Oil International Conference, MedGO 2015, Mechref, Lebanon, 16/04/15. https://doi.org/10.1109/MedGO.2015.7330321

Evaluation of localized thinning in straight carbon steel piping under internal pressure. / El Gharamti, Iman A.; Chaaban, Ahmad J.
2015 Mediterranean Gas and Oil International Conference, MedGO 2015: Proceedings. IEEE Institute of Electrical and Electronic Engineers, 2015. 7330321.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Evaluation of localized thinning in straight carbon steel piping under internal pressure

AU - El Gharamti, Iman A.

AU - Chaaban, Ahmad J.

PY - 2015/11/16

Y1 - 2015/11/16

N2 - The Scope of this paper is directed towards examining the influence of localized wall-thinning depth ratio and internal pressure on the collapse failure of some typical pressurized straight carbon steel pipes mainly used in refineries and petro-chemical plants. The investigation was achieved by conducting a parametric study using three-dimensional elastic-plastic finite element analysis (FEA). Several standard pipe sizes (NPS-4 to 14) with various wall thinning depth ratios (up to 75% of the wall thickness) have been considered. The localized wall thinning was assumed to be uniform. Based on the results, it was shown that the elastic-plastic FEA can be used to accurately estimate the 'failure pressure' and assess the remaining strength of the pipe. In addition, the API 579 Fitness-For-Service assessment limiting pressure analysis has been considered as a basis to propose an API-modified simple way of assessing the integrity of pressurized locally thinned standard straight pipes.

AB - The Scope of this paper is directed towards examining the influence of localized wall-thinning depth ratio and internal pressure on the collapse failure of some typical pressurized straight carbon steel pipes mainly used in refineries and petro-chemical plants. The investigation was achieved by conducting a parametric study using three-dimensional elastic-plastic finite element analysis (FEA). Several standard pipe sizes (NPS-4 to 14) with various wall thinning depth ratios (up to 75% of the wall thickness) have been considered. The localized wall thinning was assumed to be uniform. Based on the results, it was shown that the elastic-plastic FEA can be used to accurately estimate the 'failure pressure' and assess the remaining strength of the pipe. In addition, the API 579 Fitness-For-Service assessment limiting pressure analysis has been considered as a basis to propose an API-modified simple way of assessing the integrity of pressurized locally thinned standard straight pipes.

KW - Failure

KW - Finite element analysis

KW - Fitness-For-Service

KW - Inspection

KW - Internal pressure

KW - Local wall thinning

KW - Plasticity

KW - Straight pipe

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M3 - Conference article in proceedings

AN - SCOPUS:84963606499

BT - 2015 Mediterranean Gas and Oil International Conference, MedGO 2015

PB - IEEE Institute of Electrical and Electronic Engineers

T2 - 1st Mediterranean Gas and Oil International Conference, MedGO 2015

Y2 - 16 April 2015 through 18 April 2015

ER -

Evaluation of localized thinning in straight carbon steel piping under internal pressure

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