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Exam API-571 topic 1 question 73 discussion

Actual exam question from API's API-571
Question #: 73
Topic #: 1
[All API-571 Questions]

Hydrochloric acid corrosion is a general and localized corrosion and is very aggressive to most common materials of construction. Damage in refineries is often associated with dew point corrosion in which vapors containing _______ and hydrogen chloride condense from the overhead stream of a distillation, fractionation, or stripping tower.

  • A. O²
  • B. O
  • C. H²O
  • D. CO²
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Suggested Answer: C 🗳️
by ahmadmm at Sept. 5, 2023, 9:58 a.m.

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ahmadmm
1 year, 4 months ago
Hydrochloric acid (aqueous HCl) causes both general and localized corrosion and is very aggressive to most common materials of construction across a wide range of concentrations. Damage in refineries is most often associated with dew point corrosion in which vapors containing water and hydrogen chloride condense from the overhead stream of a distillation, fractionation, or stripping tower.
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