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Failure analysis of natural gas pipeline

Incident involving failures of 6months old API 5L X42 (NPS8) and SDR 17, 125mm medium density polyethylene pipe (MDPE) supplying natural gas to an industrial customer has caused serious 7h supply disruption. Study was performed to identify the most probable cause of the pipes failures. The study con...

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Main Authors: Abdul Majid, Zulkifli, Mohsin, Rahmat, Yaacob, Z, Hassan, Zulkafli
Format: Article
Language:English
Published: Faculty of Chemical and Natural Resource Engineering, UTM 2008
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Online Access:http://eprints.utm.my/id/eprint/18836/1/Zulkifli%20Abdul%20Majid2009_Failure%20analysis%20of%20natural%20gas%20pipes.pdf
http://eprints.utm.my/id/eprint/18836/
https://www.researchgate.net/publication/245161740_Failure_analysis_of_natural_gas_pipes
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spelling my.utm.188362017-10-12T06:14:16Z http://eprints.utm.my/id/eprint/18836/ Failure analysis of natural gas pipeline Abdul Majid, Zulkifli Mohsin, Rahmat Yaacob, Z Hassan, Zulkafli Unspecified Incident involving failures of 6months old API 5L X42 (NPS8) and SDR 17, 125mm medium density polyethylene pipe (MDPE) supplying natural gas to an industrial customer has caused serious 7h supply disruption. Study was performed to identify the most probable cause of the pipes failures. The study conducted by reviewing the existing design and construction data, visual physical inspection, pipe material analysis, structural analysis using NASTRAN and Computational Fluid Dynamics analysis (CFD) using FLUENT. Investigations revealed that high pressure water jet from leaked water pipe had completely mixed with surrounding soil forming water soil slurry (high erosive properties) formed at a close vicinity of these pipes. Continuous impaction of this slurry upon the API 5L X42 pipe surface had caused losses of the pipe coating materials. Corrosion quickly ensued and material loss was rapid because of the continuous erosion of oxidised material that occurred simultaneously. This phenomenon explains the rapid thinning of the steel pipe body which later led to its failure. Metallurgical study using photomicrograph shows that the morphology of the steel material was consistent and did not show any evidence of internal corrosion or micro fractures. The structural and CFD simulation results proved that the location, rate and the extent of erosion failures on the pipe surfaces can be well predicted, as compared with actual instances. Faculty of Chemical and Natural Resource Engineering, UTM 2008 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/18836/1/Zulkifli%20Abdul%20Majid2009_Failure%20analysis%20of%20natural%20gas%20pipes.pdf Abdul Majid, Zulkifli and Mohsin, Rahmat and Yaacob, Z and Hassan, Zulkafli (2008) Failure analysis of natural gas pipeline. Journal of Chemical and Natural Resources Engineering - Modeling Inovation, 2 (Sp Ed.). 122 - 132. ISSN 1823-5255 https://www.researchgate.net/publication/245161740_Failure_analysis_of_natural_gas_pipes
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic Unspecified
spellingShingle Unspecified
Abdul Majid, Zulkifli
Mohsin, Rahmat
Yaacob, Z
Hassan, Zulkafli
Failure analysis of natural gas pipeline
description Incident involving failures of 6months old API 5L X42 (NPS8) and SDR 17, 125mm medium density polyethylene pipe (MDPE) supplying natural gas to an industrial customer has caused serious 7h supply disruption. Study was performed to identify the most probable cause of the pipes failures. The study conducted by reviewing the existing design and construction data, visual physical inspection, pipe material analysis, structural analysis using NASTRAN and Computational Fluid Dynamics analysis (CFD) using FLUENT. Investigations revealed that high pressure water jet from leaked water pipe had completely mixed with surrounding soil forming water soil slurry (high erosive properties) formed at a close vicinity of these pipes. Continuous impaction of this slurry upon the API 5L X42 pipe surface had caused losses of the pipe coating materials. Corrosion quickly ensued and material loss was rapid because of the continuous erosion of oxidised material that occurred simultaneously. This phenomenon explains the rapid thinning of the steel pipe body which later led to its failure. Metallurgical study using photomicrograph shows that the morphology of the steel material was consistent and did not show any evidence of internal corrosion or micro fractures. The structural and CFD simulation results proved that the location, rate and the extent of erosion failures on the pipe surfaces can be well predicted, as compared with actual instances.
format Article
author Abdul Majid, Zulkifli
Mohsin, Rahmat
Yaacob, Z
Hassan, Zulkafli
author_facet Abdul Majid, Zulkifli
Mohsin, Rahmat
Yaacob, Z
Hassan, Zulkafli
author_sort Abdul Majid, Zulkifli
title Failure analysis of natural gas pipeline
title_short Failure analysis of natural gas pipeline
title_full Failure analysis of natural gas pipeline
title_fullStr Failure analysis of natural gas pipeline
title_full_unstemmed Failure analysis of natural gas pipeline
title_sort failure analysis of natural gas pipeline
publisher Faculty of Chemical and Natural Resource Engineering, UTM
publishDate 2008
url http://eprints.utm.my/id/eprint/18836/1/Zulkifli%20Abdul%20Majid2009_Failure%20analysis%20of%20natural%20gas%20pipes.pdf
http://eprints.utm.my/id/eprint/18836/
https://www.researchgate.net/publication/245161740_Failure_analysis_of_natural_gas_pipes
_version_ 1643647009272365056
score 13.211869

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