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- W98556611 abstract "Mantena Sverige AB is responsible for providing maintenance to Skanetrafiken’strains. The maintenance is done in their depot located outside of Helsingborg.Previously all sourcing and inventory control of spare parts used for repairs has beendone by the company who built the trains and who has a warehouse located in thesame building as Mantena’s depot. However, Mantena is currently in the process ofestablishing their own organization for sourcing and inventory control. The purpose ofthis master’s thesis is to construct a tool that will help Mantena in the developmentof an inventory control system.The tool is built using Excel and Visual Basic and provides Mantena with forecasts offuture demand as well as an (R,Q)-policy where the re-order points and orderquantities needed to meet a predefined service requirement are calculated. Theforecasts are done using Croston’s method and the modified version of it proposed bySyntetos and Boylan. The order quantity is calculated by using the economic orderquantity. The re-order point is calculated by using a compound process where aBernoulli process represents time intervals between demands, and an empiricaldistribution represents demand sizes.When building the tool the authors strived towards making it reliable, functional anduser friendly. The aim was that any employee at Mantena should be able to use it,despite any possible lack of knowledge about inventory control.Analysis of the historical demand data revealed that many spare parts had only beendemanded a handful of times thus making the statistical calculations for these spareparts less reliable. For these spare parts an alternative, qualitative, method todetermine re-order points and order quantities is presented in the report.During the work process the authors identified several areas that should beinvestigated further in order to improve both the tool in itself and Mantena’s workwith inventory in general. Among these are the defining of suitable service levels andthe defining of costs related to handling the inventory the most important." @default.
- W98556611 created "2016-06-24" @default.
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- W98556611 date "2014-01-01" @default.
- W98556611 modified "2023-09-27" @default.
- W98556611 title "Lagerstyrning av reservdelar hos Mantena Sverige AB" @default.
- W98556611 hasPublicationYear "2014" @default.
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