Leak identified in a recovery boiler
November 20, 2021
Boiler, PV and Refrigeration
Location: Prince George
Regulated industry sector: Boilers, PV & refrigeration - Refrigeration system
A crack developed in a boiler primary air port crotch plate and traveled into the boiler tube. The tube had scaling, and it is highly likely that elevated temperatures led to a thermal fatigue crack that traveled across the attachment weld and into the tube. The failure led to water and steam being discharged directly above the smelt bed.