Submerged chain conveyors are use to collect the waste material from boiler outlet, cooling the same though dewatering. Ash falls continuously from a boiler through the boiler outlet hopper in to a chamber filled with water. The wet ash is conveyed from the chamber through continuous loop of running slat type chain conveyor and can be loaded directly to a transport or further conveyed to a storage location for disposal. The movement of material from one side of the conveyor to other side can be increased or decreased as per the requirement of the client and based on the length of the conveyor. Our conveyor can designed as inclined, to ease the loading of the wet ash to a transport directly.