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Abstract(s)
A área de estudo que suporta esta dissertação é o pensamento Lean. A implementação do mesmo visa melhorar o planeamento e a programação das atividades, aumentar a produtividade, motivar os trabalhadores, ajudar na introdução de novos hábitos e de novas atitudes no trabalho, bem como identificar os desperdícios que devam ser eliminados.
O pensamento Lean foi uma das formas encontradas para lidar com o aumento da competitividade no meio empresarial, decorrente do processo de globalização da economia e dos mercados de negócio. O Lean permite a redução de custos e de desperdícios, melhores níveis de produtividade e qualidade, entre outras necessidades.
O processo de investigação desta dissertação envolve a análise da origem, desenvolvimento, princípios, metodologias e ferramentas de implementação do Lean, realçando a abrangência do mesmo a diversas atividades e áreas de negócio. As ferramentas e metodologias selecionadas são precisamente as que têm uma aplicação mais ampla, podendo ser aplicadas tanto do setor industrial como no setor dos serviços.
A presente dissertação visa mostrar a aplicabilidade do pensamento Lean em setores diferentes do setor de origem, contribuindo para o desenvolvimento da aplicação do pensamento Lean em projetos que se destinem a reduzir custos de operação e manutenção, e à diminuição de desperdícios num sistema.
Esta dissertação demonstra a importância dos ciclos de melhoria contínua e da fase de planeamento em específico. Um planeamento apropriado é essencial para resolver os problemas na causa raiz, evitando a resolução de problemas com base em sintomas superficiais.
A dissertação foca-se num estudo de caso numa central termoelétrica a carvão, cujo objetivo é a redução do teor de sólidos à entrada da instalação de tratamento de efluentes líquidos, provenientes do processo de tratamento de gesso utilizado na central para reduzir as emissões de óxidos de enxofre para a atmosfera. O uso do pensamento Lean prova ser essencial no processo de planeamento da instalação de hidrociclones, de forma a garantir a redução de desperdícios e custos de operação e manutenção.
The area of study that supports this dissertation is the Lean Thinking. Its implementation of Lean Thinking aims to improve the planning and programming of activities, to improve productivity, to motivate collaborators, to help in the introduction of new habits and attitudes at work, as well as to identify the waste that should be eliminated. Lean Thinking was one of the ways found to deal with the increase in competitivity in the business environment, due to the economy and business markets globalization process. Lean Thinking enables the reduction of expenditure and waste, better levels of productivity and quality, among other needs. The process of investigation of this dissertation involves the analysis of the origin, development, principles, methodologies and tools of implementation of Lean, highlighting the extent of it to diverse activities and business areas. The tools and methodologies selected are precisely the ones that have a broader application, being able to be applied both in the industrial and service sectors. The present dissertation aims to show the applicability of Lean Thinking in sectors different from the origin sector, contributing to the development of the application of Lean Thinking in projects destined to reduce costs of operation and maintenance, and to the reduction of waste in a system. This dissertation shows the importance of the continuous improvement cycles, and the planning phase in specific. An appropriate planning is essential to solve the problems in its root cause, avoiding the problem solving based on superficial symptoms. The dissertation focuses on a case study in a coal power plant, whose goal is the reduction of the content of solids at the entrance of the wastewater treatment installation, originated from the process of treatment of gypsum used in the power plant to reduce the emissions of sulfur oxides to the atmosphere. The use of Lean Thinking proves to be essential to the planning process of the implementation of the hydrocyclones installation, to ensure the reduction of waste and costs of operation and maintenance.
The area of study that supports this dissertation is the Lean Thinking. Its implementation of Lean Thinking aims to improve the planning and programming of activities, to improve productivity, to motivate collaborators, to help in the introduction of new habits and attitudes at work, as well as to identify the waste that should be eliminated. Lean Thinking was one of the ways found to deal with the increase in competitivity in the business environment, due to the economy and business markets globalization process. Lean Thinking enables the reduction of expenditure and waste, better levels of productivity and quality, among other needs. The process of investigation of this dissertation involves the analysis of the origin, development, principles, methodologies and tools of implementation of Lean, highlighting the extent of it to diverse activities and business areas. The tools and methodologies selected are precisely the ones that have a broader application, being able to be applied both in the industrial and service sectors. The present dissertation aims to show the applicability of Lean Thinking in sectors different from the origin sector, contributing to the development of the application of Lean Thinking in projects destined to reduce costs of operation and maintenance, and to the reduction of waste in a system. This dissertation shows the importance of the continuous improvement cycles, and the planning phase in specific. An appropriate planning is essential to solve the problems in its root cause, avoiding the problem solving based on superficial symptoms. The dissertation focuses on a case study in a coal power plant, whose goal is the reduction of the content of solids at the entrance of the wastewater treatment installation, originated from the process of treatment of gypsum used in the power plant to reduce the emissions of sulfur oxides to the atmosphere. The use of Lean Thinking proves to be essential to the planning process of the implementation of the hydrocyclones installation, to ensure the reduction of waste and costs of operation and maintenance.
Description
Trabalho final de mestrado para obtenção do grau de mestre em Engenharia Mecânica
Keywords
Pensamento Lean Lean thinking Melhoria contínua Continuous improvement Planeamento Planning Dessulfuração Dessulfuration Hidrociclones Hydrocyclones
Citation
SOUSA, Eduardo Faria de - Aplicação de ferramentas Lean na medição do desempenho da redução da produção de resíduos numa instalação de tratamento de efluentes de dessulfuração. Lisboa: Instituto Superior de Engenharia de Lisboa, 2020. Dissertação de mestrado.
Publisher
Instituto Superior de Engenharia de Lisboa