HGI Online Process and Corrosion Calculations

In April 2021, The Hendrix Group will make a number of process and corrosion calculations available online.  Calculations offer the choice of US customary and metric units.  The source material is technical literature in the public domain, and full references are provided.  At times the original source material was ancient and hard to find.  The use of these online calculators will initially be free of charge for registered users.

The following process and corrosion calculations will be made available:

• p_H2S and p_NH3 of Alkaline Sour Water
• Solubility of CO₂ in Water
• Solubility of H₂S in Water
• Solubility of O₂ in Saline Water
• Vapour Pressures of 14 Inorganic Compounds (incl. Water) and 700 Major Organic Compounds
• Water Dewpoint 

• Alkaline Sour Water Corrosion
• Deposition Temperatures of Ammonium Salts (API RP 932-B)
• NACE MR0175 – Determination of SSC Regions and Acidic Sour Water Corrosion
• API RP 581 – Amine Corrosion of Carbon Steel and Stainless Steel
• API RP 581 – Cooling Water Corrosion of Carbon Steel
• API RP 581 – Dilute Hydrochloric Acid and Organic Acids
• API RP 941 – High-Temperature Hydrogen Attack, based on Nelson Curves (incl. Cladding)
• API RP 581 – High-Temperature Oxidation Rates (incl. Creep and Scaling Temperatures)
• API RP 581 – Naphthenic Acid Corrosion
• API RP 939-C – Sulfidic Corrosion (H₂-Free), based on Modified McConomy Curves
• API RP 939-C – Sulfidic Corrosion (H₂-H₂S), based on Couper Gorman Curves