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Skip to Search Results- 2NNpHSCC
- 2Near-neutral pH SCC
- 1Bending residual stress
- 1CO2 corrosion
- 1Circumferential NNpHSCC
- 1Hydrogen permeation
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Effect of Field Bending and Girth Weld on the Initiation and Early Growth of Near-Neutral pH Circumferential Stress Corrosion Cracking (NNpHCSCC) in Thin-walled Pipeline
DownloadFall 2023
Pipeline failure because of near-neutral pH stress corrosion cracking (NNpHSCC) has been a concern in Canada for over 30 years. Previous studies focused on axial NNpHSCC, which has happened more frequently than circumferential NNPHSCC (C-NNPHSCC). This study focuses on the significance of...
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Full-Scale Investigation of Crack Growth Behaviour Under Variable Pressure Fluctuations in Near-Neutral pH Environments
DownloadSpring 2020
The goal of this investigation was to study hydrogen-facilitated fatigue crack growth behaviour on pre-existing cracks in a full-scale specimen exposed to a near-neutral pH (NNpH) environment. The full-scale specimen used in this study was a 4.77 m segment of NPS 18, SCH 10, X-60 gas transmission...
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Understanding the Effects of Hydrogen, Hydrostatic testing and Mill- scale on SCC of Pipelines in Near-Neutral pH Environment
DownloadFall 2016
Near-neutral pH stress corrosion cracks (NNpH SCC) are developed under coating disbondments on the external surface of pipelines where the surface of pipeline is exposed to the soil solution. NNpH SCC initiation and early stage of growth is mainly governed by the dissolution process of steel....