| Appearance | Observation | Locations | Mechanism | |
|---|---|---|---|---|
|
Fine cracks around studs | Cracking » Not in or near a weld » Transverse | Studded Waterwall | Thermal Fatigue |
|
Circumferential cracking | Cracking » Not in or near a weld or attachment » Transverse | Waterwall | Thermal Fatigue |
| Appearance | Observation | Location | Mechanism |