Appearance | Observation | Locations | Mechanism | |
---|---|---|---|---|
Catastrophic failure associated with weld overlay | Cracking » In or near weld or attachment » Transverse | Waterwall | Hydrogen Damage | |
Complete failure at weld | Cracking » In or near weld or attachment » Transverse | Superheater | Dissimilar Metal Weld CreepThermal Fatigue | |
Transverse crack near support | Cracking » In or near weld or attachment » Transverse | Evaporator | Thermal Fatigue | |
Complete weld separation | Cracking » In or near weld or attachment » Transverse | Superheater | Dissimilar Metal Weld Failure (DMW) | |
Appearance | Observation | Location | Mechanism |