H₂S partial pressure, design or operating conditions?

Determining H₂S Partial Pressure for Sour Service: Understanding NACE MR0175

When it comes to sour service, calculating the partial pressure of H₂S (ppH₂S) is crucial for setting production environment limits for carbon steels, low-alloy steels, and corrosion-resistant alloys. But according to ANSI/NACE MR0175/ISO 15156, it’s unclear whether operating or design pressure should be considered, or an intermediate value when calculating partial pressure.

Operating or Design Pressure: Which One to Use?

To determine the system’s total absolute pressure, it’s essential to calculate it based on the system’s design or operating pressure. But which one should you use when calculating partial pressure? This is where OGC Energy comes in.

Expertise in H₂S Partial Pressure Calculations

At OGC Energy, we have the expertise to help clients determine the partial pressure of H₂S and decide whether to use operating or design pressure. By evaluating the production conditions, the design, and evaluating the risks and consequences, we can assist with sour service material selection and partial pressure calculations.

Don’t let uncertainty about H₂S partial pressure calculations put your operations at risk. Talk to our team today to learn more about how we can help.

Are you experiencing technical challenges that are compromising your project? Contact us now and let us to get your project back on track!

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