Dissertations / Theses on the topic 'Plant layout – Planning'

Thesis (M.S.)--West Virginia University, 2004.
Title from document title page. Document formatted into pages; contains viii, 91 p. : ill. Includes abstract. Includes bibliographical references (p. 76-77).

Thesis (Ph. D.)--West Virginia University, 2007.
Title from document title page. Document formatted into pages; contains xi, 86 p. : ill. Includes abstract. Includes bibliographical references (p. 82-86).

In this thesis we present an integrated formulation for production planning, facilities layout and process selection and provide two heuristics for solving the integrated problem. The traditional solution procedures to each of the subproblems are discussed. The decisions modeled in these three problems are interrelated and, in some cases, share overlapping data requirements. The integrated formulation provided is a mixed integer program. Solving this mixed integer program optimally is a hard problem. Thus, in this thesis we only provide heuristic solutions. An optimal branch and bound algorithm is suggested. Both heuristic solutions are demonstrated on a sample problem. The results of testing eight problems is recorded. Further suggestions for improving the heuristic solutions are also provided.

La seguente trattazione affronta e tratta in maniera dettagliata il problema della pianificazione e realizzazione degli impianti industriali. L’obiettivo del progetto è stato quello di riorganizzare il layout di un impianto industriale attraverso la procedura del Systematic Layout Planning. Definire un layout significa determinare la disposizione delle aree aziendali ottimizzando lo spazio disponibile. Questo processo coinvolge vari aspetti aziendali e non solo la produzione; in particolare è necessario curare gli aspetti logistici poiché sono prettamente collegati e vincolanti nelle scelte fatte in questa fase. La struttura dell’elaborato prevede una prima parte teorica in cui sono descritti i criteri e le metodologie alla base della progettazione, successivamente verrà lasciato ampio spazio alla descrizione del caso aziendale. Il progetto alla base della tesi è stato svolto presso Officine Gullo Srl ed ha avuto una durata di 6 mesi; il lavoro è stato condotto a stretto contatto con un altro studente e in team congiunto con il dipartimento di Ingegneria Industriale dell’Università di Bologna. Il progetto ha previsto la riorganizzazione della produzione in un unico plant a partire dai 4 stabilimenti attuali; il lavoro si è distinto in due macro-fasi di durata pressoché equivalente: - Analisi della situazione as-is: mappatura del flusso fisico e informativo, descrizione degli attuali plant e analisi dei flussi; - Sviluppo della fase to-be: dimensionamento singole aree e definizione possibili soluzioni con confronto qualitativo e quantitativo.

In this thesis was a model developed, in order to improve deficiencies in existing literature regarding the layout problem and to give companies a comprehensible user-friendly procedure on how to design competitive production processes, plant layouts and material handling systems. The model consists of six phases that can be used sequentially in order to design, evaluate, implement and maintain effective plant layouts and material handling systems. The model can also be used to examine and optimize processes. The first four phases of the model were tested successfully in a case study at Holtab AB, a medium sized manufacturing company in Tingsryd.

The term ‘Industry 4.0’ leads to many new possibilities like smart factory which is the amalgamation of manufacturing systems in a network to perform tasks more efficiently. It is becoming more and more important for the companies to develop smart factories and integrate the devices within such a facility to meet the demands of the evolving market. The next generation production systems are designed to share the data within the network, plan, and predict the solution for the future problems. One such technology under smart factory is 3D laser scanning resulting in point cloud of the production unit. The traditional way of documenting a layout is usually with the help of 2D computer aided designs which are susceptible to measurement errors and changes that are not updated regularly. With the help of point clouds, an as-is representation of the factories can be recorded which can be easily updated with changes in the real world. With advancements in virtual manufacturing, the need for visualization of the factories is increasing drastically. 3D Laser Scanning is one of the better ways of meeting this need, among many other applications. The focus of the thesis had been to create a method document for 3D laser scanning of factories and to discuss the future possibilities of it. The research approach used in this thesis was conducting observational study, interviews and testing of the method. One such future possibility is autonomous scanning and how it would be beneficial for a company like Scania which is developing smart factories. Based on the study carried out during the thesis, a document presenting the method developed is included in the report. The report also points out the applications and benefits of point cloud over traditional layout planning methods.

La capacidad y las buenas prácticas de producción son base para el desarrollo de las empresas y más con la competitividad actual. Por ello, el caso de estudio presentado analiza las operaciones de una MYPE peruana del sector plástico, que habría dispuesto previamente mudarse a una nueva planta. En base a un diagnóstico se identificó un déficit en su capacidad de producción con costos representativos equivalentes al 9% de su facturación anual, derivados de la falta de máquinas e ineficiencias, las cuales aun siendo solucionadas no permitirían satisfacer la demanda, por lo que se confirmó que la decisión de la empresa era correcta. De tal forma, se planteó un proyecto que permitiría el diseño de las nuevas instalaciones de la empresa en un local de mayores dimensiones, con el objetivo de optimizar su capacidad de producción y evitar que las malas prácticas detectadas en la actualidad se repitan, validando su viabilidad mediante un prototipo virtual. Asimismo, en base a los cálculos se lograría aumentar la capacidad instalada en 53.5%, superando a la demanda proyectada dentro de tres años en un 24.90 %, lo que permitiría un mayor crecimiento organizacional en el futuro.
The capacity and good production practices are the basis for the development of companies and more with the current competitiveness. Therefore, the case study presented analyzes the operations of a Peruvian MSE in the plastics sector, which would have previously arranged to move to a new plant. Based on a diagnosis, a deficit in its production capacity was identified with representative costs equivalent to 9% of its annual turnover, derived from the lack of machines and inefficiencies, which, even being solved, would not allow to satisfy the demand, therefore confirmed that the company's decision was correct. In this way, a project was proposed that would allow the design of the company's new facilities in a larger premises, with the aim of optimizing its production capacity and preventing the bad practices detected at present from being repeated, validating their viability through a virtual prototype. Furthermore, based on the calculations, it would be possible to increase the installed capacity by 53.5%, surpassing the projected demand in three years by 24.90%, which would allow greater organizational growth in the future.
Trabajo de investigación

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
This study proposes a production model that increases the manufacturing capacity in a small and medium-sized enterprise (SME) of garments with an aim to reduce the nonfulfillment of order deliveries. An assessment has been done and waiting times between production processes have been identified, along with defective products and inefficient work methods. This study proposes the design of a lean manufacturing model under the change management approach, whose methodology comprises five phases. In phase 0, awareness and training sessions are conducted (change management). Then, phase 1 reorganizes the work area (plant layout re-distribution and 5S) and phase 2 seeks better workload balances (line balance and Heijunka implementation). Later, phase 3 standardizes work methods (standardization). Finally, the proposed model will be validated to determine whether the selected operating tools are supported by the awareness that contributes to increasing production. © 2021, Springer Nature Switzerland AG.
Revisión por pares

Trots den nytta som BIM har på ett projekt så finns det fortfarande företag som väljer att skapa sina APD-planer på det traditionella arbetssättet. Det traditionella arbetssättet innebär att APD-planen upprättas på den gamla metoden som vanligtvis görs med 2D. Anledningen bakom att det fortfarande finns företag som upprättar APD-planer på den traditionella arbetsmetoden är att de inte finns någon tillräcklig vilja eller kunskap att ändra arbetsmetod trots att metoden anses vara osäker och tidskrävande. Det har istället förekommit en ny arbetsmetod för att frambringa planer och ritningar som ska ersätta den traditionella arbetsmetoden. Denna arbetsmetod skapar modeller i 3D där de ingående byggkomponenterna även innehåller information. Denna arbetsmetod kallas för BIM som står för byggnadsinformationsmodellering. Modellen som upprättas med BIM och som innehåller information om de tillgängliga byggkomponenterna kallas för BIM-modell. BIM som arbetsmetod kan i sin tur användas för att skapa APD-planer med hjälp av stödjande verktyg som tex SketchUp och Revit vilket medför många fördelar.  Denna studie syftar därför till att undersöka hur APD-plan visualiseras i dagens läge samt upplysa vilka faktorer som samtliga byggföretag ska beakta vid val av verktyg för visualisering av byggarbetsplatsen. Fördelar, nackdelar samt hinder kommer att lyftas fram i denna studie med hänsyn till 3D och BIM i syfte att undersöka vilken dimension det är som lämpar sig bäst för visualisering av APD-planen samt vilken dimension APD-planen visualiseras med i dagsläget. Ytterligare ett syfte är att undersöka var i byggprocessen som APD-Planen bör integreras. Fokus kommer ligga på att påvisa fördelarna med att utöka användandet av 3D respektive BIM-relaterade APD-visualiserings verktyg. Det som tas upp i frågeställningarna är vilka de olika fördelar respektive nackdelar samt hinder som finns med att tillämpa 3D och BIM vid visualisering av APD-plan. Dessutom görs två olika visualiseringar med 3D och BIM verktyg för att visa hur APD-planen visualiseras.       Den mest användbara dimensionen vid visualisering av APD-planen är 2D där APD-planen upprättas med Bluebeam. Det finns vissa företag som har övergått till 3D vid visualisering men som kombinerar med 2D ritningar eller skisser. Att visualisera med BIM har inte varit aktuellt för de samtliga intervjuade företagen. Däremot används de färdigprojekterade BIM modellerna som en del av 3D visualiseringen i syfte att skapa en så verklighetsanpassad visualisering som möjligt. Fördelarna med att visualisera en APD-plan med 3D och BIM-verktyg är att det ger en förverkligad bild på hur byggarbetsplatsen kommer att se ut och att risker, möjligheter och problem som inte skulle kunna upptäckas med 2D-modellen blir upptäckbara. Nackdelen däremot med att visualisera en APD-plan med 3D eller BIM-verktyg är att filerna kan bli alltför tunga vilket leder i sin tur till verktyget blir svår hanterligt samt upplevs som hackigt. Det som dock hindrar många ifrån att implementera 3D och BIM-relaterade verktyg är den mänskliga faktorn som sätter stop för utvecklingen, där människans bekvämligheter och arbetsrutiner är avgörande för implementeringen av verktygen. De absolut viktigaste faktorer som ett företag bör beakta vid val av verktyg vid visualisering av APD-plan är Lönsamhet, användarupplevelse, kompatibilitet och support.
Despite the benefits that BIM has on a project, there are still companies that choose to create their APD plans in the traditional way. The reason why there are still companies that draw up APD plans on the traditional working method is that they do not have sufficient will or knowledge to change working method despite the method being considered uncertain and time consuming. Instead, there has been a new working method for producing plans and drawings that will replace the traditional working method. This working method creates models in 3D where the constituent building components also contain information. This working method is known as BIM as a wound for building information modeling. The model that is established with BIM and which contains information about the available building components is called the BIM model. BIM as a working method can in turn be used to create APD plans with the help of supporting tools such as SketchUp and Revit, which brings many benefits. This study therefore aims to investigate how APD plans are visualized in the current situation and to inform which factors all construction companies must take into account when choosing tools for visualization of the construction site. Advantages, disadvantages and obstacles will be highlighted in this study with regard to 3D and BIM in order to investigate which dimension is best suited for visualization of the APD plan and which dimension the APD plan is visualized with at present. Another purpose is to investigate where in the construction process the APD Plan should be integrated. The focus will be on demonstrating the benefits of expanding the use of 3D and BIM-related APD visualization tools, respectively. What is addressed in the issues is what are the different advantages and disadvantages as well as obstacles that exist with applying 3D and BIM when visualizing APD plans. In addition, two different visualizations are made with 3D and BIM tools to show how the APD plan is visualized. The most useful dimension in visualizing the APD plan is 2D where the APD plan is created with Bluebeam. There are some companies that have switched to 3D in visualization but which are combined with 2D drawings or sketches. Visualization with BIM has not been relevant for all the companies interviewed. On the other hand, the pre-designed BIM models are used as part of the 3D visualization in order to create as realistic a visualization as possible. The advantages of visualizing an APD plan with 3D and BIM tools are that it provides a realistic picture of what the construction site will look like and that risks, opportunities and problems that could not be detected with the 2D model become detectable. The disadvantage, however, of visualizing an APD plan with 3D or BIM tools is that the files can become too heavy, which in turn leads to the tool becoming difficult to handle and perceived as choppy. However, what prevents many from implementing 3D and BIM-related tools is the human factor that puts a stop to development, where human conveniences and work routines are crucial for the implementation of the tools. The most important factors that a company should consider when choosing tools when visualizing APD plans are Profitability, user experience, compatibility and support.

碩士
國立成功大學
工學院工程管理專班
97
Solar energy industry has been developed rapidly in recent years. They are required in the production technology to the way (Turn-key solution) that copy the same experience rapidly, so at this stage for the industry with high homogeneity. If we want to enhance our competitiveness nothing is better than from the manufacturing process is upgraded and lower production costs are reduced effectively .It is also base on plant facilities. Plant facilities layout (Layout) is always for the performance of manufacturing systems have a significant impact. The general layout of the facilities solutions are measured the quality of design on transport distance, these methods can not be considered effectively on multi-objective decision-making problem, so cannot ensure the problem solution quality on multi-objective. From the practical point of view, the plant layout problem in essence is a need to emphasize communication and co-ordination and how to integrate the views of the majority of the multi-objective decision-making problems, the majority of literature are almost emphasis on solution method and rarely on the group decision-making process give a clear explain. Therefore, how to combine effectively the group decision-making structure and logic to find an easy application and suitability methods for thin-film solar industry is the key point of this paper. This paper combined with a Systematic Layout Planning(SLP)and the Analytic Hierarchy Process(AHP), used on the central spine layout to solve the facilities layout design problem for thin-film solar industry. First, by the SLP steps to do and use from - to chart to achieve transport cost for quantitative indicators; to operate and develop relationships to the working data. The working data are combine the expert suggestions and join the actual constraints to gain a number of alternatives and then by the Check List to confirm and find three better alternatives. Finally, to draw up the decision-making objectives. Then use AHP method to calculate of relative weight and consistency to estimate the best layout and carry out sensitivity analysis. The results show this method practicality and applicability for thin-film solar industries application of facility layout, it is the value of paper-based.

碩士
中原大學
工業與系統工程研究所
106
This study explores the method of systematic layout planning，Facility planning for M Company new Facility planning，M Company is an industrial automation system integration equipment manufacturer that develops its private brand. Provide high quality industrial automation products in different fields and different needs，Since M company''s performance has increased year by year，The plant space is no longer sufficient. In order to expand production capacity and to offer customers more services，Therefore, M Company decided to build a new automated intelligent factory. In response to future capacity needs, Planning new plant must use a variety of professional approach to analysis，If unable to think in detail, The follow-up costs for engineering change will be difficult to estimate。 In this study, SLP(Systematic Layout Planning) planning approach as the main framework，Assist M company in the planning of facilities for the new plant, SLP is a highly rational technology that is widely used in the field of floor plan design，The article will use the analysis of operational logistics relevance, the degree of strength and weakness between departments，The configuration and dynamic planning of each area will help M company to maximize the value of the new plant。

Significant improvements in production effectiveness have resulted from implementing cellular manufacturing systems (CMS). Following the cell formation, an important issue that needs to be addressed is the unequal cell (or department/facility) layout problem, which is the sub-issue in the CF problem. The work reported in this thesis illustrates the assignment of unequal cell locations in dealing with the known traffic movements on a shop floor. In addition, this research addresses the impact of the geometry or shape of the department as an important design factor in the unequal area facility layout problem, an issue that has not been addressed by the previous researchers. The problem is formulated as a mixed-binary non-linear programming model and is proven to be NP-hard in the strong sense. Due to its computational complexity, a higher-level heuristic, based on a concept known as tabu-search, is proposed to efficiently solve the problem. Six different versions of the tabu search-based heuristic algorithm are tested on three different problem structures. The results obtained from performing the experiment concluded that the tabu search-based heuristic using short-term memory and variable tabu-list sizes is preferred over other heuristics as the problem size increases. The performance comparison between the current and the previous research shows that the solution obtained for the well-known problems in this research are better than that obtained in the past.
Graduation date: 2002

碩士
元智大學
工業工程與管理學系
97
Because of the unique life cycle of TFT-LCD industry and the impact of global financial crisis, the enterprise’s profitability decreases dramatically. Therefore, the competition of continuing building new generation plant is over. Instead, each company examines the advantages and disadvantages of exciting plants to develop its niche products and marketing strategies. Take C Company’s Generation 3 (G3) plant as an example, which hopes that it can decreases the risk of NB, monitor, and TV panels merely by entering the Medium and Small size market. By purchasing new equipments of bottle-neck processes to raise capacity, decreasing product unit cost, and enhancing product competitiveness, the company also thinks about how to make proper facility layout and review the necessity of adjusting the exciting facilities with limited spaces and minimum expenses. Because of the re-layout would result in huge fixed facility expenses (without adjusted), the company would also review the current facility layouts that need to be improved at the same time. In this study, we developed four feasible alternatives by using pairwise interchange method by measuring the total traveling distances. Through the analysis, we could exchange the location of clean process and inspection process and increased its capacity at the same time. It reduced efficiently the unit manufacturing cost of NTD 82.14 per piece, about 10.79%, and it also increased product competitiveness. At the situation of production-then-sale, the facility’s pay-back period could be reduced to 2.4 years. The total moving distance was reduced from 1,865 down to 1,662 meters (i.e., 10.89%).

碩士
元智大學
工業工程與管理學系
95
The 5 major mask processes in TFT-LCD Array Manufacturing Process are Gate Electrode (GE)、Semiconductor Electrode (SE) 、Source Drain Electrode (SD)、 Contact Hold (CH) and Pixel Electrode (PE) processes which all repeat the sub-process of thin-film developing、photo transferring、etching and stripping process. Each of the ordinary flat glass panel must process through the sub-process for 5 times to fabricate the TFT-LCD Display Panel. The manufacturing process layout becomes a key point because of the increasing manufacturing complexity and the characteristic of manufacturing process re-flowing. The original TFT-LCD Array process was “Functional flow layout”, after a long-term operation it produced a great amount of overlapped process and the flows material turn un-smoothed. In order to improvement the circumstances, the manufacturing facility layout plan to re-design and re-arrange. To achieve the goal of minimum facility moving path, the similar working processes group together and re-annarge the path according to the dispatching rule. The outline of the new dispatching path is like an Arabic number “8” so name the method “8 Style Layout”. Furthermore, combining “8 Style Layout” with “Functional Group Layout” forms the “Group+8 Style Layout”. This research plan to analyze the difference between the former “Function layout” method with the improved“Group+8 Style Layout” method under the condition of same facility layout space and the same numbers of manufacturing machines in the T Company by computing the total facility dispatching distance、the numbers of moving equipments、the cycle time of each production lot and the quantities of the WIP. The result reveals that the “Group+8 Style Layout” could eliminate an RGV robot、reduce 36 seconds /lot of each production cycle time and decrease the 0.008% WIP Inventory .