Leak identified in a recovery boiler

Incident Investigation

Leak identified in a recovery boiler

November 20, 2021

Boiler, PV and Refrigeration

Reference Number:

II-1289464-2021 (#25109)

Location: Prince George

Regulated industry sector: Boilers, PV & refrigeration - Refrigeration system

Incident overview

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.


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