ROUTING ORDER PICKING IN A WAREHOUSE USING HETEROGENEOUS PICKING TOOLS AND SPLIT PICKING

ROUTING ORDER PICKING IN A WAREHOUSE USING HETEROGENEOUS PICKING TOOLS AND SPLIT PICKING

Author		: MUHAMMAD NASHIR ARDIANSYAH 
Published on	: International Conference on Operations and Supply Chain Management (Nusa Dua, Bali, Indonesia)

Abstract

“Order picking is one of the main activities in the warehouse to serve every order. This activity takes up about 55% of the overall warehouse activities. Order picking is done by the picker using tools (lift truck or hand jack) or manually using hand to take the goods according to order picking list. The constraint related to tool capacity and the number of tools will make order picking activity takes a long time. Order picking fulfillment activity must wait because insufficient tools capacity and quantity to finish the activity simultaneously, where the order picking activity has time limit. Moreover, there are possibility for the quantity to be picked that are bigger than the capacity of each tools. The picker must visit the picking point more than one times.
This paper discusses the problem of order-picking warehouse with an emphasis on finding route with regard to tools number (quantity) and tools capacity. Insertion heuristic method is used to find initial solution route using different types of transportation equipment. Genetic algorithms are used later on to improve the order picking route in order to get a better solution. The objective function is to minimize the time of the total order picking in a rectangular warehouse.”