Failure analysis of a 34CrMo4 seamless steel gas cylinder filled with a mixture of fluorine and nitrogen gases

Annan, Kofi Ahomkah; Njoroge, E.G.; Siyasiya, Charles Witness; Mostert, R.J.

doi:10.1016/j.engfailanal.2020.104914

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2022

2023

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“…The results show that the cylinder was cracked due to stress corrosion and finally led to an overload fracture. Annan et al [10] studied the cause of the accidental explosion failure of a 34CrMo4 low-carbon alloy steel seamless gas cylinder filled with a mixture of fluorine and nitrogen after five years of service, as shown in Figure 1 (b). The results show that the reason for the explosion failure of the gas cylinder is the fluorine corrosion of alloy steel.…”

Section: Introductionmentioning

confidence: 99%

The Causes of Explosion Failure of Liquid Ammonia Cylinder

Ren

2023

J. Phys.: Conf. Ser.

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Gas cylinders are widely used in industrial production and daily life. Due to the complexity of the medium contained in the cylinder and the unsafe factors in the use and management, cylinder accidents occur more frequently. This paper analyzes the cause of a burst accident in the liquid ammonia cylinder. The results show that the chemical composition and mechanical properties of cylinder materials basically meet the requirements of relevant standards. No obvious defects were found on the weld and fracture surface during NDT. The outer surface of the gas cylinder is severely corroded, especially in the weld area, where there is a lot of pitting corrosion.

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Section: Introductionmentioning

confidence: 99%