Ergonomic and technical aspects in the redesign of material supply systems: Big boxes vs. narrow bins

摘要: This paper presents a design stage comparison of an existing ‘big box’ material supply strategy common in Swedish manufacturing to proposed ‘narrow bin’ approach Japanese production systems. Performance times, walking distances, layout space requirements were evaluated for 6 workstations using boxes’ parts along the line. Biomechanical loading on spine and shoulder was estimated one workstations. Comparisons made simulated layouts with approach. The use narrow bin yielded significant reductions rack lengths (−81%), Material Areas (−61%), Walking Distances Indirect Work (−24%), Cycle times (−8%). Peak cumulative spinal load estimates showed from 29% 65% similar shoulders hands. also has implications re-supply system, enables flexible racking can reduce lift-truck use. intensification may increase risks if time-gains are used only direct assembly work repetitions. It is concluded that potential both improve productivity risk characteristics system. Further field testing required. Relevance industry: Supplying materials smaller narrower bins poses ‘win-win’ tactic decreased operator improved performance final when compared strategies. choice requires context-specific assessment.