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Failure Analysis of a Stainless Steel Pipe Elbow in a Purge Gas Line

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Abstract

A failure analysis was performed on a SA-312 TP304 stainless steel pipe elbow in a purge gas line at a petrochemical plant. Fatigue was confirmed to be the mechanism of the failure. Visual, dimensional, fractography, macrostructural, and vibrational evaluations; as well as microindentation hardness measurements, material characterization, and morphology analysis, were performed. The contributing factors for the fatigue were extreme steady-state piping vibration in the line of the elbow, a non-conformance weld joint, and improper pipe installation which caused external stress on the elbow. The fatigue most likely was originated by a crack at an inclusion in the grain boundary of the austenitic microstructure. The results emphasize that by not complying with adequate piping installation, with welding practices and without reducing or attenuating vibrations in equipment or at its proximity; failures associated with fatigue in this material will tend to be present, increasing the need of costly plant shutdowns.

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References

  1. W.D. Callister, D.G. Rethwisch, Fundamentals of Materials Science and Engineering: An Integrated Approach (Wiley, Hoboken, 2012)

    Google Scholar 

  2. S. Vishnuvardhan et al., Fatigue ratcheting studies on TP304 LN stainless steel straight pipes. Proc. Eng. 2(1), 2209–2218 (2010)

    Article  Google Scholar 

  3. ASTM International, ASTM E3–11(2017) Standard Guide for Preparation of Metallographic Specimens (ASTM International West Conshohocken, PA, 2017)

    Google Scholar 

  4. Institute A.P., API STD 618—Reciprocating Compressors for Petroleum, Chemical, and Gas Industry Services (American Petroleum Institute, Washington, D.C., 2007), p. 210

    Google Scholar 

  5. ASTM International, ASTM A312. Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes, in Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes (ASTM International, West Conshohocken, PA, 2017)

    Google Scholar 

  6. A. International, Fatigue and Fracture, Vol. 19. ASM Handbook, ed. by S. Lampman (ASM International, Ohio, 1996)

  7. S. Kumar, W.A. Curtin, Crack interaction with microstructure. Mater. Today 10(9), 34–44 (2007)

    Article  Google Scholar 

  8. A. Mohamed, Intergranular corrosion fatigue fracture surface analysis of nickel alloy. Proc. Eng. 114, 754–759 (2015)

    Article  Google Scholar 

  9. R. Singh et al., The effects of cold working on sensitization and intergranular corrosion behavior of AISI 304 stainless steel. Metall. Mater. Trans. A 34(11), 2441–2447 (2003)

    Article  Google Scholar 

  10. K. Pinnow, A. Moskowitz, Corrosion resistance of stainless steel weldments. Weld. Journal 49(6), 278–284 (1970)

    Google Scholar 

  11. M.F. McGuire, Stainless steels for design Engineers (Ohio, ASM International, 2008)

    Google Scholar 

  12. R.A. Covert, A.H. Tuthill, Stainless steels: an introduction to their metallurgy and corrosion resistance. Dairy Food Environ. Sanit. 20(7), 506–517 (2000)

    Google Scholar 

  13. D. Kotecki, F. Armao, Stainless Steels Properties–How to Weld Them Where to Use Them (The Lincoln Electric Company, Ohio, 2003)

    Google Scholar 

Download references

Acknowledgments

The authors would like to thank Ms. Janell C. Ramlal and Mr. Nicholas Mohammed for their support in carrying out this study.

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Authors and Affiliations

  1. Mechanical and Manufacturing Engineering Department, University of the West Indies, Saint Augustine, Trinidad & Tobago

    C. Maharaj

  2. San Antonio, USA

    Andres Marquez

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  1. C. Maharaj
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  2. Andres Marquez
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Correspondence to C. Maharaj.

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Maharaj, C., Marquez, A. Failure Analysis of a Stainless Steel Pipe Elbow in a Purge Gas Line. J Fail. Anal. and Preven. 19, 15–23 (2019). https://doi.org/10.1007/s11668-019-00587-0

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  • DOI: https://doi.org/10.1007/s11668-019-00587-0

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