Journal of Failure Analysis and Prevention

, Volume 9, Issue 4, pp 310–315 | Cite as

Failure Analysis of Fire Tube Sleeve of Heater Treater

Case History---Peer-Reviewed
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Abstract

The fire tube sleeve of a Heater Treater that was installed in an Oil and Gas processing unit ruptured after a service life of around 15 years. The detailed failure analysis was undertaken on this failed Incoloy 800 (UNS N08800) fire tube sleeve to ascertain the causes and mechanism of failure. The various studies indicated that the exposure of the sleeve to excessive temperature resulted in internal oxidation corrosion and caused of the failure. Additionally, Incoloy 800 is susceptible to sensitization in the temperature range of 540–1095 °C which did occur and resulted in intercrystalline cracks causing grains to fall out of the metal leading to a thickness reduction. The main causes of failure were overheating and the resulting microstructural evolution and recommendations to prevent such failures in future are presented.

Keywords

High temperature corrosion Failure analysis Heater Treater Fire tube sleeve Incoloy 800 

Notes

Acknowledgments

The authors are thankful to the ONGC management for providing the necessary infrastructure for carrying out the analysis and its gracious approval for publication of this article.

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Copyright information

© ASM International 2009

Authors and Affiliations

  1. 1.Materials and Corrosion Section, Institute of Engineering & Ocean TechnologyOil and Natural Gas Corporation LimitedNavi-MumbaiIndia

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