External thinning, smooth areas

Fireside Corrosion DT3a

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Comments

Abrasion from fly ash may cause erosion. Corrosion may also occur as sulfur deposits become acidic during shut-down or cool gas temperatures. This type of corrosion is more prevalent in oil-fired boilers and in the back-end of the gas path, i.e., economizers.

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External thinning, smooth areas