At OGC Energy we help the energy industry with finding answers to some of their most difficult questions. We have created this section hoping that you will find answers to some of the most common questions in the following areas:
If you require technical support in metallurgy, corrosion, or welding; or if you need assistance meeting the requirements of ANSI/NACE MR0175/ISO 15156 then contact our team, we are here to help you.
What are the considerations for materials used in hydrogen gas transport infrastructure? Introduction This FAQ discusses the importance of selecting suitable materials for hydrogen gas transport infrastructure. It highlights the need to evaluate materials for compatibility with hydrogen at the pressures and temperatures seen in the natural gas transportation lines. Answer Materials used in natural […]
Does hydrogen gas affect the fatigue strength of materials in hydrogen gas transport systems? Introduction This FAQ examines the impact of hydrogen gas on the fatigue strength of materials used in hydrogen gas transport systems. It addresses concerns related to fatigue resistance in the presence of hydrogen and its effects on machinery subjected to cyclic […]
What is hydrogen embrittlement in the context of H₂ gas transport? Introduction Hydrogen embrittlement is a term used to describe failures related to the absorption of hydrogen by metals. The specific damage mechanism relevant to hydrogen gas transportation is hydrogen stress cracking (HSC), which occurs when hydrogen molecules dissociate into atoms and diffuse into susceptible […]
Does hydrogen transportation involve corrosion reactions? Introduction Hydrogen transportation does not involve the presence of liquids or electrolytes, which are necessary for corrosion reactions. This absence of electrolytes means that the formation of hydrogen ions, typically promoted by corrosion reactions, is not supported during hydrogen transport. Answer No, hydrogen transportation does not involve corrosion reactions. […]
How does surface condition affect the absorption of hydrogen during transport? Introduction The condition of the surface in hydrogen transport plays a role in the absorption of hydrogen. An oxide-free surface, particularly in the presence of a fresh crack, can increase the absorption rates of hydrogen. Answer Surface condition, specifically the absence of oxide scale, […]
Why is carbon steel commonly used in the natural gas transmission network? Introduction Carbon steel is the primary material of construction in the natural gas transmission network due to the absence of internal corrosion concerns. It is widely utilized in the oil and gas industry, particularly in applications where low strength is acceptable. Answer Carbon […]
Can hydrogen embrittlement affect the fatigue behavior of metals in valves? Introduction Hydrogen embrittlement has the potential to alter the fatigue behavior of metals, including those used in valves. Fatigue failure in valves is typically attributed to cyclic actuation and pressurization. Answer Yes, hydrogen embrittlement can impact the fatigue behavior of metals, including those used […]
Is the risk of hydrogen stress cracking high for carbon steel alloys in the natural gas transmission network? Introduction Considering the expected hydrogen concentration at the operating conditions of the natural gas transmission network, along with specific concerns, the risk of hydrogen stress cracking for carbon steel alloys is evaluated. Answer The risk of hydrogen […]
How does rapid gas decompression (RGD) affect polymer and elastomer seals in the context of hydrogen gas transport? Introduction Rapid gas decompression (RGD) is a phenomenon that may impact polymer and elastomer seals in the context of hydrogen gas transport. During high-pressure operation, hydrogen can be absorbed into polymeric materials, and when the system pressure […]
How does the Joule-Thomson effect influence the behavior of polymer seals in relation to hydrogen and methane gas transport? Introduction The Joule-Thomson effect, which occurs during decompression, plays a significant role in the behavior of polymer seals in hydrogen and methane gas transport. Factors such as diffusion and solubility coefficients, as well as the cooling […]
