Omloppstid för returenheter
Cycle time has a direct influence on number of returnable crates needed and therefore a crucial parameter for cost structure and pricing of the user fec in the pool system.For providing the growing market, number of crates has to increase as well as the utilization of existing crates. To accomplish this aim, cycle time for the whole supply chain has to be fully unravelled and understand.The purpose is to map cycle time and stock movements, to see how, where and when crates are being used in the supply chain. The goal is to make a method of cycle time calculation, together with suggestions of improving the pool system and decrease cycle time.The study has been a combination of qualitative and quantitative research and comprises the three biggest wholesalers in Sweden; ICA, Coop and Axfood. Furthermore have 65 grocery shops, connected to the wholesalers, been investigated and mapped.The study has come to a conclusion that cycle time for an average returnable crate is 19 days. The full-size and half-size crates have a bit longer cycle time, 21-22 days, while Dual Height-crates and shallow haif-size crates have 17-18 days. The share of transportation and manual handling time is 5 days and the rest of cycle time is in various inventories along the supply chain.Additionally ties the supply chain up some 1.35 million crates, in various types of safety stocks.Just in grocery shops are about 400 000 crates in use as an internal unit, mainly as a build up-unitin displays and as storage-unit in the selling area. Further more tells the calculation that 800 000crates doesn?t been used, who can be a hint of size of the wastage. The author has come to aconclusion that the wastage per cycle can be estimated to 0.5 %.To decrease cycle time and increase the utilization, the author has some suggestions. These are divided into four groups; to maximize the utilization of single returnable crates, to facilitate control and administration, to simplify and improve the daily flow and increase communication within and between different players in the returnable system.The biggest potential for decreasing cycle time is to increase the filling rate and use the fittest type of crate, If the tilling rate could increase 5 %, would more than 3 million cycles been avoided. Furthermore have grocery shops no incentives for sorting the reverse flow. If the sorting is done properly, cycle time decrease as well as cost for e.g. transportation and handling. Every player in the supply chain would reflect upon how many returnable crates they handle and use, so a greater awareness appear of how they affect the returnable system. Finally would the suborders, orders and consignments bill be facilitated, in the same time as the visibility within wholesales between wholesalers and Svenska Retursystem enhances.