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HGI Process and Corrosion Calculators

In April 2021, we will introduce a number of on-line Process and Corrosion Calculators for the Process and Refining Industries.  The process calculators calculate solubility and partial pressures of compounds directly involved in corrosion mechanisms.  Often these calculations are hard to find.  The corrosion calculators are developed for common damage mechanisms documented in API Recommended Practices and elsewhere.  Calculations are based on technical literature in the public domain, and these literature references are provided.  

The following calculators will be made available on-line (registration required):

  • Alkaline Sour Water - calculate pH2S and pNH3
  • Solubility of CO2 in Water
  • Solubility of H2S in Water
  • Solubility of O2 in Water
  • NACE MR0175 SSC Region Calculator, incl. API RP 581 Acid Sour Water Corrosion
  • API RP 581 - Alkaline Sour Water Corrosion
  • API RP 581 - Amine Corrosion
  • API RP 581 - Cooling Water Corrosion
  • API RP 581 - Dilute Hydrochloric Acid and Organic Acid Corrosion
  • API RP 581 - Naphthenic Acid Corrosion
  • API RP 581 - High Temperature Oxidation
  • API RP 932-B - Desublimation of Ammonium Salts
  • API RP 939-C - Sulfidic Corrosion, H2-Free - Modified McConomy
  • API RP 939-C - Sulfidic Corrosion, H2-H2S - Couper Gorman
  • API RP 941 - High Temperature Hydrogen Service
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