El proceso que pasa una vacuna a través de la cadena de suministro de frío tiende a requerir un estándar de alta calidad. La importancia de este producto para el consumo humano se ha vuelto necesaria en todo el mundo. Esta investigación tendrá en cuenta los principales factores que afectan la eficiencia y el rendimiento del producto sensible a la temperatura; Se aplicará una herramienta que mejore las condiciones en el almacenamiento y en el método de trabajo enfocado bajo un análisis de operación. Además de esto, analizaremos un estudio de caso de un operador logístico en Perú, se propondrán mejoras en los procesos más importantes y críticos. Como método de validación, se utilizará una simulación del modelo propuesto y se llevará a cabo utilizando el software Arena. Las técnicas de distribución de la planta también se aplicarán para evaluar el diseño. Los resultados disminuyen el proceso de selección en un 27% y eliminan los errores que ocurren. En un nuevo diseño, el costo del viaje disminuye en un 48%. Otro resultado que tiene un impacto directo en la cadena es la reducción sistemática del costo asociado con el suministro y la cadena de la vacuna, que en promedio se reduce en un 10% del total. / The process that a vaccine passes through the cold supply chain tends to require a high quality standard. The importance of this product for human consumption has become necessary throughout the world. This research will take into account the main factors that affect the efficiency and performance of the temperature sensitive product; a tool will be applied that improves the conditions in the storage and in the method of work focused under an analysis of operation. In addition to this, we will analyze a case study of a logistics operator in Peru, improvements in the most important and critical processes will be proposed. As a validation method, a simulation of the proposed model will be used and will be carried out using the Arena software. Plant distribution techniques will also be applied to evaluate the design. Results decrease the selection process by 27% and eliminate errors that occur. In a new design, the cost of the trip decreases by 48%. Another result that has a direct impact on the chain is the systematic reduction of the cost associated with the supply and chain of the vaccine, which on average is reduced by 10% of the total. / Trabajo de investigación

Studien är utförd på ATEA logistics med syftet att skapa förståelse för hur man kan kombinera två olika plockmetoder i materialförsörjningen. Målet med arbetet är att ta fram en modell som beslutsunderlag för hur denna kombination ska se ut med hjälp av kunskap angående påverkande faktorer. Resultatet är framtaget genom litteraturstudie kring plockmetoder samt egna mätningar och observationer på fallföretaget. Det konstaterades med hjälp av ett faktabaserat beslutsunderlag i form av jämförelsetider att man kunde spara upp till 295 sekunder på en given plockrunda hos fallföretaget. Det har då konstaterats att man med hjälp av kvantifierbara beslutsmodeller kan skapa kortare ledtider i materialförsörjningen med hjälp av en kombination av plockmetoder. / This report is a case study, which was conducted at ATEA Logistics AB. It’s purpose was to create understanding of how a combination of two picking methods can be used in materials supply. From this understanding the goal was to design a decision making model for when each of the methods is to be used. Literarry research, time studies, observations and interviews have been used to reach this goal. By calculating comparative times for each method, with the use of a factual decision making model, it was determined that the case company could save up to 295 seconds in a single picking round. From this result it was concluded that by using quantifiable and factual decision models, materials supply can be made more efficient by the use of a combination of picking methods.

Keywords: E-commerce, Order process, Return process, Order picking, Waste, Lean production, Process flowchart, Poka Yoka, 5S, Six Sigma, Kaizen, Kata. Introduction: To sell products on the internet, it is important to be at the forefront of internal routines and processes to not be overtaken by a competitor. Small e-commerce companies do not have the same resources to implement autonomous processes to the same extent as large e- commerce companies, therefore this study examines the shortcomings in the order picking and return process for small e-commerce companies and how these shortcomings can be remedied from a Lean perspective to have an opportunity to compete on the market. Purpose: The aim of this study is to develop different opportunities for improvement from a Lean perspective by analyzing different e-commerce companies, focused on its processes within order picking and return management. Method: The study has been done as a qualitative case study with a deductive approach and a critically realistic approach. The primary data has been collected through semi-structured interviews and observations. Conclusion: Shortcomings as motion, defects, waiting and non-utilized potential have been identified in the order pick process and return process. Suggested Lean techniques as 5S, Kaizen & Kata and six sigma have been presented as methods for improving the identified shortcomings that occur in these processes for e-commerce companies.

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