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5.2.2 Materials handling systems and equipment

There are three types of materials handling systems: manual, mechanised and automated. The choice of a particular system will depend on various factors such as physical structure of the warehouse, types of materials to be handled, types of movements and of course the initial capital outlay. The objective of the materials handling manager is obviously to ensure that materials must be in the right place at the right time and in the right quantity.

Manual materials handling systems are labour intensive and lead to inefficiencies in space utilisation and product movement. Examples of these systems are low racks, drawers, bins, manual and gravity flow conveyors. Mechanised materials handling systems such as the forklift truck and pallets, towlines, cranes, storage rack systems and wheel conveyor have replaced much of the labour intensive handling, thereby dramatically increasing efficiency.

Automated materials handling systems are more sophisticated and more efficient than either of the previous two. These systems use carousels, optical scanners, item picking equipment, automatic storage and retrieval systems, high-rise rack systems, automatic guided vehicles (AGV) and robots. Although these are highly productive, some companies refrain from using them because of their high initial costs, their requirement for special types and sizes of facilities and lack of back-up systems in case of failures.

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