The slurry from the bottom ash system as well as from fly ash system is discharged by pipeline to the slurry pump through the ash sump. The slurry sump is divided into compartments with common trough and plug gate to feed respective sump. Due to the high density and velocity of ash slurry in sump, erosion of surface is high. The power plants are increasingly using Cast Basalt Liners as their preferred lining.