Appearance | Observation | Locations | Mechanism | |
---|---|---|---|---|
General pitting | Holes, Pits, Gouges » Waterside (Firetube boiler) | Waterside of firetube boiler | Acid Attack | |
Multiple tight fine cracks | Cracking » Longitudinal » Not in or near a weld | Superheater | Stress Corrosion Cracking | |
Multitude of cracks parallel to tube | Cracking » Longitudinal » Not in or near a weld or attachment | Superheater | Long-term Overheat/Creep | |
Appearance | Observation | Location | Mechanism |