Handbook of Case Histories in Failure Analysis
High-Temperature Stress Relaxation Cracking and Stress Rupture Observed in a Coke Gasifier Failure
A pressure vessel failed causing an external fire on a nine-story coke gasifier in a refinery power plant. An investigation revealed that the failure began as cracking in the gasifier internals, which led to bulging and stress rupture of the vessel shell, and the escape of hot syngas, setting off the fire. The failure mechanisms include stress relaxation cracking of a large diameter Incoloy 825 tube, stress rupture of a 4.65 in. thick chromium steel shell wall, and the oxidation of chromium steel exposed to hot syngas. The gasifier process and operating conditions that contributed to the high-temperature degradation were also analyzed and are discussed.
Daniel J. Benac, Douglas B. Olson, Michael Urzendowski, High-Temperature Stress Relaxation Cracking and Stress Rupture Observed in a Coke Gasifier Failure, Handbook of Case Histories in Failure Analysis, Vol 3, Edited By Larry Berardinis, ASM International, 2019, p 426–438, https://doi.org/10.31399/asm.fach.v03.c9001814
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New Handbook: Volume 11B
Volume 11B serves as a reference and guide to help engineers determine the causes of failure in plastic components and make corrective adjustments through design and manufacturing modifications.