API 510 HCL Corrosion

  1. HCL Corrosion causes
    Both general and localized corrosion
  2. HCL corrosion affects
    most plant construction materials
  3. Which process areas are most susceptible to HCL corrosion
    Distillation overhead systems
  4. HCL corrosion normally occurs as
    dew point corrosion
  5. The severity of HCL corrosion increase as the HCL concentration increases and the
    temp increases
  6. Hydrochloric Acid can from when HCL comes in contact with
  7. Rapid HCL corrosion begins to occur if the pH drops below
  8. Which materials are less susceptible to HCL corrosion
    Alloy 400 and Titanium
  9. HCL corrosion typically occurs in which process units
    Crude unit and Catalytic reforming unit
  10. HCL corrosion in 400 series SS will appear as
  11. HCL Corrosion in 300 Series SS will appear as
    Cracking or pitting
  12. Which of the following is not a method to reduce the risk of HCL Corrosion in the Crude unit overhead system

    C) Steam injection to dilute the acid
  13. In the crude unit, one of the checks for potential of HCL corrosion is to determine the chloride content in the water of the overhead accumulator. A common chloride limit is
    ≤ 20 ppm
  14. HCL corrosion can create highly localized corrosion in areas where
    water with chloride is condensing (vapor to liquid)
Card Set
API 510 HCL Corrosion
API 510 HCL Corrosion