"In this study, the explosion failure of a bellows expansion joint made of Type 304 stainless steel (UNS S30400) in a pipeline conducting methane (CH4) gas at 400 °C is analyzed. Using the simulation mechanical software, the behavior of the pipeline during the working condition was investigated.
Observations of the metallographic sections indicated that corrosion was involved in the cracking of the bellows that led to the explosion. After investigating the fracture surface, it was noted that the cracks occurred at dimples in the bellows. The presence of hydrogen sulfide (H2S) in the gas stream resulted in stress corrosion cracking".
Read the incident in this link
No comments:
Post a Comment