Exam API-571 All QuestionsBrowse all questions from this exam
Question 63

The major factors affecting high temperature sulfidation are the temperature, the presence of hydrogen, the concentration of H²S and the __________.

    Correct Answer: A

    The major factors affecting high temperature sulfidation are temperature, the presence of hydrogen, the concentration of H²S, and the alloy content. Alloy content is crucial because different alloys have varying resistances to sulfidation based on their composition.

Discussion
ahmadmm

The critical factors for high-temperature H2/H2S corrosion are the temperature, the presence of hydrogen, the concentration and partial pressure of H2S, the vapor/liquid ratio, and the chemical composition of the alloy.