Abstract
The failure of pipe ASTM A351 HK-40 in reaction plant unit has been reported. The failure occurs after 1.5 years in service. The present investigation aims to analyze the main cause of the failure by conducting a standard failure analysis test including chemical composition test, visual examination, microstructure examination by optical microscope and scanning electron microscope–energy-dispersive spectroscopy (SEM–EDS), x-ray diffraction, hardness Vickers and stress calculation. The sulfide corrosion, leakage and erosion were found at the bottom of the longitudinal pipe ASTM A351 HK-40. The results of this investigation suggest that the causes of failure are the high content of the sulfide in the reactant, and the high-temperature process up to 650 °C will potentially rapid the corrosion, the fluid flow and fluid phases will erode the surface of the pipe and form the leak on the surface, and the formation of the sigma phase in the material. Thus, the other material used is suggested such as ASTM A351 HP which has higher corrosion resistance and heat resistance.
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Yushandiana, F., Setiana, H. & Pujiyulianto, E. Case Study: The Failure Analysis of Pipe ASTM A351 HK-40 in Reaction Plant Unit. J Fail. Anal. and Preven. 20, 663–670 (2020). https://doi.org/10.1007/s11668-020-00885-y
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DOI: https://doi.org/10.1007/s11668-020-00885-y