Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Six Sigma Model to Improve the Lean Supply Chain in Ports by System Dynamics Approach
Ports are one of the important sectors of the national economy of a country and are primarily involved in the import and export of goods and services from one point to another, such as between the sea, river, road, and railways. The quality of a port is one of the important aspects to make a port attractive. The lean supply chain in ports is one of these attractive aspects. This research aims to design a six sigma model to improve the lean supply chain in ports. Six sigma model can be built by using system dynamics approach which enables to take into account dynamics variables. The lean supply chain in ports focuses on eliminating sources of “waste” in the entire flow of material in the cargo-handling process. The types of waste in ports have been identified as the delay time of equipment and transporters, lost and damaged cargo, equipment and transporter breakdowns. This research begins with the research formulation and definition of objectives. After that, the model conceptualization is constructed using a causal loop diagram based on the objective, a literature study, and field study. The causal relationships between variables are determined by historical data in real cases, from the literature, and from expert judgements. The model is validated with a real case in CDG Port in Indonesia and simulated using Powersim software. By simulating the process from the base case model, it is possible to propose a policy for improvement scenarios. Regarding the simulation results in the base case, it has been found that the high berth occupancy ratio (BOR), which influences the congestion that is indicated by the vessel waiting time, is one of the key performance indicators in port operation. Also, the demurrage and repair costs contribute most to the total cost of poor quality, followed by the cost of lost cargo. The demurrage cost is caused by the delay time of equipment and transporters, and the repair cost is caused by equipment and transporter breakdown. Regarding the results of improvement scenarios, it can be ...
Six Sigma Model to Improve the Lean Supply Chain in Ports by System Dynamics Approach
Ports are one of the important sectors of the national economy of a country and are primarily involved in the import and export of goods and services from one point to another, such as between the sea, river, road, and railways. The quality of a port is one of the important aspects to make a port attractive. The lean supply chain in ports is one of these attractive aspects. This research aims to design a six sigma model to improve the lean supply chain in ports. Six sigma model can be built by using system dynamics approach which enables to take into account dynamics variables. The lean supply chain in ports focuses on eliminating sources of “waste” in the entire flow of material in the cargo-handling process. The types of waste in ports have been identified as the delay time of equipment and transporters, lost and damaged cargo, equipment and transporter breakdowns. This research begins with the research formulation and definition of objectives. After that, the model conceptualization is constructed using a causal loop diagram based on the objective, a literature study, and field study. The causal relationships between variables are determined by historical data in real cases, from the literature, and from expert judgements. The model is validated with a real case in CDG Port in Indonesia and simulated using Powersim software. By simulating the process from the base case model, it is possible to propose a policy for improvement scenarios. Regarding the simulation results in the base case, it has been found that the high berth occupancy ratio (BOR), which influences the congestion that is indicated by the vessel waiting time, is one of the key performance indicators in port operation. Also, the demurrage and repair costs contribute most to the total cost of poor quality, followed by the cost of lost cargo. The demurrage cost is caused by the delay time of equipment and transporters, and the repair cost is caused by equipment and transporter breakdown. Regarding the results of improvement scenarios, it can be ...
Six Sigma Model to Improve the Lean Supply Chain in Ports by System Dynamics Approach
Ridwan, Asep (Autor:in) / Noche, Bernd
14.11.2016
Hochschulschrift
Elektronische Ressource
Englisch
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