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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Improvements in Internal Logistics : A Case Study at SSAB Oxelösund - Logistics Development Department

Ghaffari, Faezeh, Mozafari, Arash January 2018 (has links)
Internal logistics is a combined performance of human resources, machines, transportation, and storage system. Thus, different elements and factors are involved in the internal transportation such as human factors and system functions. Moreover, Internal transportation is an important part of production activities because of its close cooperation with production processes. Since the largest portion of the logistics costs is related to transportation, improvements in transportation will lead to a significant increase in profits. The purpose of this thesis is to make improvements in the internal transportation of SSAB. Improvements here means identifying involved wastes in internal transportation, then give recommendations and suggestions to eliminate those wastes. This is a single case study at SSAB Oxelösund. SSAB stands for Svenskt Stål AB formed in 1978 and is well-known because of its special steel products. This company produces steel products for both standard and special orders and uses. All the underproduction plates have to go through a chain of operations to become the finished products. Different operation can be mentioned as cutting, painting, sorting, etc. Material movements in this chain of operations are done with the help of special cassettes and carriers. Cassettes are the main resources intheinternal transportation of SSAB and availability of empty cassettes plays a key role in the whole production process of the company. There are three departments that are involved with internal transportation at SSAB Oxelösund. Four research objectives are designed to cover the purpose of this study. In the following, several interviews and observations are done to collect the qualitative part of data gathering. The quantitative part of data collection is done with exporting data series from company’s database. Theoretical frame work ismainly based on Lean and logistics theories. Analysing the collected data and comparing the results with theoretical frame work lead to identifying the wastes in different areas related to defined research objectives. Different wastes are identified in carriers and drivers’ performances, treatment stations, etc. Therefore, specific recommendations are given based on the identified wastes in order to eliminate those wastes. The recommendations are presented to have faster and optimized material flow. Additionally, areas for further research and an Impact/Effort matrix are provided for future implementations and analysis.
2

Effektivisering av godsflöden i icke-tillverkande verksamheter : En fallstudie på DB Schenker

Kowalski, Bent, Jäderén, Jonas January 2017 (has links)
Purpose: The purpose of this study is to investigate how an efficient freight flow and a surface utilization of a warehouse layout can be achieved in non-manufacturing third party logistics companies. In addition to that the aim is to provide an analysis of how logistics costs are affected by existing wastes. Based on this three research questions have been formulated:   1. What factors are decisive for how efficient a freight flow can be in a nonmanufacturing business?  2. How can the layout of a terminal be streamlined based on prioritizations of freight?   3. What logistics costs arise in a non-manufacturing business and how can these be linked to specific processes and activities?  Methodology: In order to answer the study´s research questions and fulfill the purpose a case study and a literature review were used as the method. Identification of waste, layout prioritization and logistics costs are the investigated areas in the literature review. The case study was conducted at a company where interviews, observations and data collection have taken place in order to answer the research questions and provide a clear picture of the problem area. The collected data is subsequently analyzed against the processed theory in the selected areas.     Findings: By applying the processed theory several wastes have been identified which underpin potential improvements. Among others the layout prioritization and the retrieval process of the case company have been identified as wastes and focused on in this study. The layout prioritizations have resulted in two restructured layout proposals in which the case company´s delivery destinations were relocated based on factors such as physical proximity and zone division. Through the proposal the efficiency of the internal freight flow of the case company can be increased and thereby cost and complexity be reduced. The retrieval process has been analyzed with the aim to identify all the affected activities and processes. By doing this each activity can be linked to the arising logistics cost. The result of this part of the study is an established calculation of the cost generated by the retrieval process.    Recommendations: For further studies in the selected area, an extended analysis of the entire freight flow from vendor to end customer is recommended to provide a deeper understanding of the entire work process. Also further studies in the logistics costs area in a non-manufacturing business is recommended. / Syfte: Studiens syfte är att studera hur ett effektivt godsflöde och ett ökat ytutnyttjande av lagerlayouten i en icke-producerande tredjepartslogistiks verksamhet kan uppnås. Dessutom är målet att ge en analys av hur logistikkostnader påverkas av slöseri. Baserad på detta har tre forskningsfrågor formulerats:   1. Vilka faktorer är avgörande för hur effektivt ett godsflöde i en icke-tillverkande verksamhet kan vara?  2. Hur kan layouten i en terminal effektiviseras baserat på prioritering av gods?  3. Vilka logistikkostnader uppstår i en icke-tillverkande verksamhet och hur kan dessa kopplas till specifika processer och aktiviteter?  Metod och genomförande: För att kunna besvara studiens forskningsfrågor och uppfylla studiens syfte användes en fallstudie och en litteraturstudie som metod. Till litteraturstudien har teori inom områdena identifiering av slöseri, layoutprioriteringar och logistikkostnader studerats. En fallstudie hos ett fallföretag genomfördes där intervjuer, observationer och insamling av data har skett för att kunna besvara studiens forskningsfrågor och ge en tydlig bild av problemområdet. Den insamlade datan analyseras senare mot vad den befintliga teorin säger inom området.   Studiens resultat: Genom tillämpning av den behandlade teorin har slöseri kunnat identifieras vilket ligger till grund för potentiella förbättringar. Bland annat har layoutprioriteringen och återtagsprocessen hos fallföretaget identifierats som slöseri och fokuserats på i studien. Layoutprioritering har resulterat i ett framtagande av förbättringsförslag där fallföretagets leveransdestinationer omsorterats baserad på faktorer som fysisk närhet och zonindelning. Genom förslagen kan effektiviteten av det interna godsflödet på fallföretags terminal ökas och därmed kostnader och komplexitet minskas. Återtagsprocessen har analyserats med mål att identifiera alla aktiviteter och processer som inverkar. Detta med mål att kunna analysera varje aktivitet och sedan kunna göra en koppling till kostnaderna som uppstår. Genom detta har en beräkning av logistikkostnaderna för återtagsprocessen etablerats i studien.  Rekommendationer: För vidare studier inom det valda området rekommenderas en utvidgad analys av hela godsflödet från försäljare till slutkunden för att ge en ännu djupare förståelse av arbetsprocesserna. Även en fördjupning av de logistikkostnader bundna till en icke- tillverkande verksamhet rekommenderas som ett område att studera vidare.

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