| Appearance | Observation | Locations | Mechanism | |
|---|---|---|---|---|
|
Severe corrosion on side of tube facing gas turbine/duct burners | Holes, Pits, Gouges » Waterside | Evaporator Section | Multiple Under-Deposit Corrosion Mechanisms Including Caustic Gouging, Phosphate Attack, and Hydrogen Damage |
|
Transverse crack near support | Cracking » In or near weld or attachment » Transverse | Evaporator | Thermal Fatigue |
| Appearance | Observation | Location | Mechanism |