Hydrosteel Hydrogen Flux Applications

Hydrogen flux from steel pipe and vessels is typically the direct result of corrosion by sour gas, cyanidic ammonium bisulfide, HF, and naphthenic and other high temperature acid corrosive media. Hydrogen flux also arises from direct dissolution of molecular hydrogen of sufficient temperature and pressure. Finally, it may result from high temperature steel processes such as welding, and on heating steel which contains trapped hydrogen.

Hydrosteel hydrogen flux measurements often providing the only practical assessment of active internal corrosion, such as under salt deposits where intrusive probes are inoperable, or at high temperatures, where alternative technologies are immovable or unreliable. Hydrosteel is used to monitor the effectiveness of corrosion control by process or chemicals over time periods of hours to weeks. It is also used in the assessment of the risk of damage to steel associated with hydrogen induced cracking (HIC), especially in sour systems. Generally, flux measurements provide a gauge of hydrogen activity which can be used to cut costs in oil production and processing. It is sometimes desirable to obtain a quantitative estimate of active corrosion rate or hydrogen damage risk by correlation with other corrosion monitor data or literature data. However, the main advantage of flux measurement is the extremely rapid assessment of active, hydrogen generating processes.

Please note, the application data presented in these webpages is intended for advisory purposes only.

Key application