Incidences of boiler failure

1. FURNACE COLLAPSED DUE TO INTERNAL EXPLOSION.
2. TUBE FAILURE WHILE RISING UP STEAM DUE TO SAND BLASTING EFFECT.
3. TUBE DISLODGE AND DISTORTED DUE TO OVERHEATING.
4. EXTERNAL CORROSION DUE TO SOOT ACCUMULATION.
5. TUBE FAILURE DUE TO BLOCKAGE CAUSED BY SCALING.
6. TUBE FAILURE DUE TO BLOCKAGE CAUSED BY CLEANING TOOLS STUCK INSIDE.
7. HANGER BLOCK COLLAPSED.
8. TUBE NEST BADLY BLOCKED BY FIBRE AND SOOT.
9. FIRE GRATE COLLAPSED.
10. CHIMNEY COLLAPSED.
11. BOILER DRUM PITTING.