engleski

TOWARDS BALANCED PRODUCTIVITY AND ERGONOMICS IN THE PURSUIT OF LEAN WAREHOUSING

The paper focuses on tactical Lean Warehousing, more precisely on the implementation of rules to carry out manual order picking in a more efficient and safe way into the warehouse organizational model. In manual order picking, humans are routed with picking lists to items’ storage locations to retrieve items for orders fulfilment. Warehouse managers suffer from ageing workforce and long and recurrent workers’ absences from work due to back and muscle pain. For identical customer order, we can achieve the same order retrieval time with different proportions of overall traveling, searching times and contribution to “daily dose” of cumulative loading on the low back depending on the storage assignment, which means assignment of items to storage/picking locations. No prior work studied the possibility of designing the storage assignment model that would provide improvements in order retrieval time and in structure of required postures. Study includes a laboratory experiment, time study and use of Revised NIOSH Lifting Equation. Final goal is to create a biobjective assignment model. Preliminary results are presented.

lean warehousing, picker-to-parts, order picking, ergonomics, productivity, NIOSH

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