API 571 question of the day · 14 November 2026
Today's API 571 practice question
Damage mechanisms: description, affected materials and critical factors
Crude oil reaching a distillation unit carries several chloride salts. Which ones are mainly responsible for the HCl that forms in the crude heater and reaches the overhead?
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This question is original and written to American Petroleum Institute's published content outline. A new question appears each day at midnight Eastern.