How to inspect for lower furnace corrosion on an ANDRITZ HERB Recovery Boiler
Lower furnace corrosion typically appears as thinning or pitting on waterwall tubes. Inspect with UT thickness gauging during planned outages and trend wall thickness over time.
~240 min7 steps
How to clear a smelt spout blockage on an ANDRITZ HERB Recovery Boiler
Smelt spout blockage stops flow and risks a dangerous water contact. Shut off wash water, clear the blockage mechanically, then restore wash water before resuming operation.
~30 min7 steps
How to diagnose superheater tube fouling on an ANDRITZ HERB Recovery Boiler
Fouled superheater tubes raise flue-gas exit temperature and reduce steam output. Confirm by comparing exit temperature trend to baseline, then schedule sootblowing or offline cleaning.
~60 min7 steps