API 571: 4.3.5 Boiler Water
Condensate Corrosion Exam
Questions and Answers (Latest
Update 2026)
Boiler Water Condensate Corrosion -
correct answer ✅General corrosion and pitting of boiler system
and condensate return piping.
What causes corrosion in boiler feed water and condensate return
systems? -
correct answer ✅Dissolved gases such as oxygen and carbon
dioxide
How is protection achieved? -
correct answer ✅Hydrazine is used to remove oxygen
Deaerators are used to remove gases
Volatile amine inhibitor is used to remove carbon dioxide
The layer of protective film that covers the pipe is called? -
correct answer ✅It is called magnetite
The lifetime of the boiler is highly dependent on? -
correct answer ✅Develop and maintain a thin protective layer of
iron oxides
Condensate Corrosion Exam
Questions and Answers (Latest
Update 2026)
Boiler Water Condensate Corrosion -
correct answer ✅General corrosion and pitting of boiler system
and condensate return piping.
What causes corrosion in boiler feed water and condensate return
systems? -
correct answer ✅Dissolved gases such as oxygen and carbon
dioxide
How is protection achieved? -
correct answer ✅Hydrazine is used to remove oxygen
Deaerators are used to remove gases
Volatile amine inhibitor is used to remove carbon dioxide
The layer of protective film that covers the pipe is called? -
correct answer ✅It is called magnetite
The lifetime of the boiler is highly dependent on? -
correct answer ✅Develop and maintain a thin protective layer of
iron oxides
