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Question 86

Corrosion from oxygen tends to be __________ type damage and can show up anywhere even if only very small amounts break through the scavenging system.

    Correct Answer: C

    Corrosion from oxygen tends to be pitting type damage and can show up anywhere even if only very small amounts break through the scavenging system. Pitting corrosion is a localized form of corrosion that leads to the creation of small holes or pits in the metal. This type of damage is particularly associated with the presence of oxygen, making 'pitting' the correct answer.

Discussion
ahmadmmOption: C

Boiler Water and Steam Condensate Corrosion Corrosion from oxygen is normally a pitting type damage. It can occur anywhere in the system there is inleakage of air or even if only very small quantities break through the oxygen scavenging treatment. Oxygen is particularly aggressive in equipment such as closed heaters and economizers where there is a rapid water temperature rise.