Hydrogen Embrittlement and Diffusion in High Strength Low Alloyed Steels with Different Microstructures

Cabrini, Marina; Lorenzi, Sergio; Bucella, Diego Pesenti; Pastore, Tommaso

doi:10.18282/ims.v2i1.182

Cited by 1 publication

(1 citation statement)

References 34 publications

(45 reference statements)

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“…In addition, ISO 15589-1 instructions for preventing disbondment of pipeline coatings state that the limiting critical potential for all metals should not be more negative than -1.20 V 31 . It is also to be noted that under normal pipeline operating conditions, this stated upper limit of -1.20 V could still be enough to result in high levels of hydrogen reduction, leading to hydrogen induced cracking of steel pipelines 21,27,32,33,34,35,36,37,38,39 .…”

Section: Cathodic Protection and The Consequences Of Overprotectionmentioning

confidence: 99%

Forensic Engineering Investigation of Factors Contributing to the Explosion of an International Natural Gas Pipeline

Rasty¹,

Parker²,

Mills³

2023

JotNAFE

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Following the explosion of a natural gas pipeline that resulted in extensive property damage, personal injury, and loss of life, a forensic engineering investigation was performed to determine factors that signifi-cantly contributed to the failure. Metallurgical analysis of the failure region resulted in the conclusion that the pipeline rupture was caused by hydrogen embrittlement acting on hard spots created during manufactur-ing. The next phase of this investigation involved root cause analysis of factors contributing to the pipeline rupture as well as evaluation of missed risk-reduction opportunities of the nondestructive analyses employed. It was ultimately determined that hydrogen embrittlement, caused by improper operation and maintenance procedures, resulted in an overabundance of hydrogen from excessive cathodic protection. Additionally, excessive operating pressure exceeded the resulting degraded ultimate capacity of the pipeline, which then manifested in the rupture of the natural gas pipeline and the ensuing explosion. It is recommended that op-erators exercise due diligence by considering the age of a pipeline when determining appropriate operating, monitoring, and maintenance procedures.

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Section: Cathodic Protection and The Consequences Of Overprotectionmentioning

confidence: 99%

Forensic Engineering Investigation of Factors Contributing to the Explosion of an International Natural Gas Pipeline

Rasty¹,

Parker²,

Mills³

2023

JotNAFE

View full text Add to dashboard Cite

show abstract

Hydrogen Embrittlement and Diffusion in High Strength Low Alloyed Steels with Different Microstructures

Cited by 1 publication

References 34 publications

Forensic Engineering Investigation of Factors Contributing to the Explosion of an International Natural Gas Pipeline

Forensic Engineering Investigation of Factors Contributing to the Explosion of an International Natural Gas Pipeline

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