| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 2.21 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Os serviços de abastecimento de água desempenham um papel fundamental na sociedade atual, sendo indispensáveis para o bem-estar da população humana no que respeita à saúde, preservação ambiental e desenvolvimento económico. Por essa razão é fundamental procurar as melhores soluções na gestão destes recursos, de uma forma economicamente viável que não comprometa a capacidade de resposta ao aumento das exigências dos consumidores. Tendo em conta este desafio, o objetivo desta dissertação consiste no desenvolvimento e na aplicação de um modelo de análise de custos, capaz de apoiar a gestão patrimonial de infraestruturas (GPI) de sistemas de abastecimento de água. O presente modelo pretende refletir-se em entidades gestoras com características idênticas à empresa Águas da Covilhã, EM (ADC, EM), com base na qual este trabalho foi desenvolvido.
O primeiro passo no desenvolvimento de um modelo fundamentado, traduz-se aqui numa revisão bibliográfica sobre os sistemas de abastecimento de água. Nesta revisão bibliográfica pretende-se distinguir o que foi, o que é, e o que se prevê vir a ser a evolução do sector da água em Portugal nomeadamente através da estratégia setorial definida no PENSAAR 2020. Considerando a importância que a GPI assume para uma gestão eficiente dos ativos associados a um sistema de abastecimento de água, nesta dissertação é também desenvolvido o estado da arte no domínio da GPI. Nesta segunda revisão bibliográfica, a GPI é analisada num contexto nacional e internacional.
Com base no estado de arte dos sistemas de abastecimento de água e da GPI, desenvolveu-se um modelo de análise de custos de apoio à GPI. O modelo apresentado tem por base uma análise do ciclo de vida dos componentes, dos níveis de serviço associados aos mesmos, e a informação atualmente existente na ADC,EM. É também apresentada uma metodologia de aplicação estruturada em seis fases, que procura responder numa perspetiva da entidade gestora, às questões: O que possuímos? Quanto vale? Quanto custa substituir? Quando existe necessidade de substituição? Qual a prioridade de intervenção?
Por forma a verificar a aplicabilidade e os pressupostos de melhoria do modelo de análise de custos presente neste trabalho, é apresentado o resultado da sua aplicação em dois subsistemas geridos pela ADC, EM. Esta amostra é referente aos aglomerados populacionais da freguesia do Paúl e de Verdelhos do concelho da Covilhã. A aplicação deste modelo nestas freguesias, revela a importância do Índice de Valor da Infraestrutura (IVI) como parâmetro da análise do estado de conservação de uma infraestrutura. IVI que se apresenta igualmente útil na definição das estratégias de investimento para a substituição de tubagens integradas num sistema de abastecimento de águas.
The water supply services play a crucial role in our society, imperative for human well-being regarding health, environmental preservation and economic development. Therefore is crucial to find the best solutions for managing these resources, in an economically viable way but without compromising the capacity of response to the increase of consumers´ demands. Taking this challenge into account, the aim of this dissertation is the development and implementation of a cost analysis model able to support the infrastructure asset management (IAM) of water supply systems. The present cost analysis model was developed at Águas da Covilhã, EM (ADC, EM), and therefore is intended to be reflected on the management of management entities with similar characteristics. A bibliographic review on the water supply systems, translates here the first step towards the development of a grounded cost analysis model. In this first state of art, is described what was, what is and what is predicted to be the evolution of the water sector in Portugal, specially through the sectorial strategy defined by PENSAAR 2020. Taking into consideration the importance of IAM of water supply systems on an efficient management of assets associated with a water supply service, in this dissertation is also developed the state of art regarding IAM. In this second bibliographic revision, IAM is analysed in a national and international context. Considering the state of art of the water supplies and IAM, the present dissertation proceeds into the development of a cost analysis model that intends to support IAM. This model is based on the analysis of components´ life cycle, service levels associated with those components, and the information currently available at ADC, EM. Furthermore it is presented an implementation methodology structured into six phases that intends to answer, in the perspective of the management entity, to the following questions: What do we have? What is the monetary value? How much it costs to replace? When should it be replaced? What is the intervention’s priority? In order to evaluate the applicability and improvement’s premises of this cost analysis model, the same was applied to two subsystems managed by ADC,EM. This sample comprised the settlements of Paúl and Verdelhos located in Covilhã. The implementation of the cost analysis model, in these subsystems, showed an important role of the Infrastructure Value Index (IVI) as a parameter for the analysis of the conservation status of an infrastructure. IVI has also been shown to be useful in defining investment strategies for replacing pipes integrated in a water supply system.
The water supply services play a crucial role in our society, imperative for human well-being regarding health, environmental preservation and economic development. Therefore is crucial to find the best solutions for managing these resources, in an economically viable way but without compromising the capacity of response to the increase of consumers´ demands. Taking this challenge into account, the aim of this dissertation is the development and implementation of a cost analysis model able to support the infrastructure asset management (IAM) of water supply systems. The present cost analysis model was developed at Águas da Covilhã, EM (ADC, EM), and therefore is intended to be reflected on the management of management entities with similar characteristics. A bibliographic review on the water supply systems, translates here the first step towards the development of a grounded cost analysis model. In this first state of art, is described what was, what is and what is predicted to be the evolution of the water sector in Portugal, specially through the sectorial strategy defined by PENSAAR 2020. Taking into consideration the importance of IAM of water supply systems on an efficient management of assets associated with a water supply service, in this dissertation is also developed the state of art regarding IAM. In this second bibliographic revision, IAM is analysed in a national and international context. Considering the state of art of the water supplies and IAM, the present dissertation proceeds into the development of a cost analysis model that intends to support IAM. This model is based on the analysis of components´ life cycle, service levels associated with those components, and the information currently available at ADC, EM. Furthermore it is presented an implementation methodology structured into six phases that intends to answer, in the perspective of the management entity, to the following questions: What do we have? What is the monetary value? How much it costs to replace? When should it be replaced? What is the intervention’s priority? In order to evaluate the applicability and improvement’s premises of this cost analysis model, the same was applied to two subsystems managed by ADC,EM. This sample comprised the settlements of Paúl and Verdelhos located in Covilhã. The implementation of the cost analysis model, in these subsystems, showed an important role of the Infrastructure Value Index (IVI) as a parameter for the analysis of the conservation status of an infrastructure. IVI has also been shown to be useful in defining investment strategies for replacing pipes integrated in a water supply system.
Description
Keywords
Análise de Custos Gestão Patrimonial de Infraestruturas (Gpi) Índice de Valor da Infraestrutura (Ivi) Sistemas de Abastecimento de Água