Failure Analysis Of A Weld Neck Flange Of The Discharge Piping Of An Ethylene Compressor In A Petrochemical Complex

α
Dr. Okpala
Dr. Okpala
σ
Alexander N.
Alexander N.
α Niger Delta University Niger Delta University

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Failure Analysis Of A Weld Neck Flange Of The Discharge Piping Of An Ethylene Compressor In A Petrochemical Complex

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Abstract

Failure Investigation was carried out on a fractured Weld neck flange of an 8″discharge pipeline of an ethylene compressor in a Petrochemical complex. The Investigation was carried out with the aim of determining the root cause of the failure. In the course of this investigation, Metallurgical techniques including micrography and fractography as well as stress analysis of the piping were carried out on the failed part. The root cause of the failure was identified as vibration induced fatigue enhanced by the non-homogeneity of the microstructure of the flange due to incorrect normalizing practice after forging. Remedial measures to prevent a reoccurrence were proffered.

References

9 Cites in Article
  1. Unknown Title.
  2. (2003). Standard for Gas Transmission and Distribution.
  3. (null). ASME Code for Pressure Piping, B31.
  4. (2006). Pipeline Transportation Systems for Hydrocarbon and other liquids.
  5. George Antaki (2003). Piping and Pipeline Engineering.
  6. (2004). ASTM E3 -01 Standard Guide for Preparation of Metallographic Specimens.
  7. Geping Bi,Yong Guan,Xiaoyu Chen,Wenhua Tan,Wenniu Huang,Yuqing Gao,Meimei Wang (2010). Evaluation of Uncertainty in Determining Average Grain Size by ASTM E112 Standard.
  8. J Davis (1998). Principles and Procedures of Fractography.
  9. P Rao (1998). Manufacturing Technology.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Dr. Okpala. 1970. \u201cFailure Analysis Of A Weld Neck Flange Of The Discharge Piping Of An Ethylene Compressor In A Petrochemical Complex\u201d. Global Journal of Research in Engineering - A : Mechanical & Mechanics GJRE-A Volume 12 (GJRE Volume 12 Issue A2): .

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Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

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Failure Investigation was carried out on a fractured Weld neck flange of an 8″discharge pipeline of an ethylene compressor in a Petrochemical complex. The Investigation was carried out with the aim of determining the root cause of the failure. In the course of this investigation, Metallurgical techniques including micrography and fractography as well as stress analysis of the piping were carried out on the failed part. The root cause of the failure was identified as vibration induced fatigue enhanced by the non-homogeneity of the microstructure of the flange due to incorrect normalizing practice after forging. Remedial measures to prevent a reoccurrence were proffered.

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Failure Analysis Of A Weld Neck Flange Of The Discharge Piping Of An Ethylene Compressor In A Petrochemical Complex

Dr. Okpala
Dr. Okpala Niger Delta University
Alexander N.
Alexander N.

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