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Advisor(s)
Abstract(s)
Devido à crescente procura por energia no cenário global que vivemos atualmente, e de forma a
minimizar o impacto ambiental, a produção de energia de fontes renováveis desempenha um papel
importante na diversificação das fontes de energia, uma vez que visa reduzir a dependência dos
combustíveis fósseis.
O presente trabalho foi desenvolvido na Siaf Energia, uma central de cogeração que utiliza
biomassa florestal residual como fonte de combustível. Esta instalação representa uma abordagem
sustentável, aproveitando os recursos orgânicos para a produção de energia elétrica e térmica. O
principal objetivo deste projeto foi facilitar a gestão da manutenção da central, de modo a potenciar
a disponibilidade operacional da instalação, isto é prevenir interrupções não programadas assim
como custos associados, através da elaboração de um plano de manutenção preventiva.
A metodologia adotada foi a Action Research, o que contribuiu para a colaboração e envolvência
entre as diferentes hierarquias, além de permitir uma abordagem flexível e orientada para os
resultados práticos. Deste processo resultou um ficheiro que permite obter uma checklist das
intervenções de manutenção preventiva recorrentes, dos diversos equipamentos, para o espaço
temporal pretendido pela gestão da manutenção, além de um cronograma para planear as tarefas
de manutenção preventiva, com periodicidades de intervenção mais alargada, ao longo do ano.
Devido à importância acrescida da lubrificação na instalação em questão, deste trabalho resultou
ainda um ficheiro que permite obter uma checklist das intervenções de manutenção preventiva de
lubrificação, e respetivas especificidades, para o espaço temporal pretendido, além de um
cronograma para o planeamento e distribuição das mesmas ao longo do ano. Sendo a segurança,
assim como a redução de custos e tempos improdutivos, um requisito para uma manutenção
eficiente, foram melhoradas as condições de identificação e acessibilidade dos pontos de
lubrificação. Para isso, foram criadas e aplicadas etiquetas com a informação considerada relevante
em todos os pontos de lubrificação, além de ter asido alterada a localização dos pontos cujas
condições de acessibilidade foram consideradas inadequadas.
De modo que a gestão da manutenção avalie e monitorize a taxa de cumprimento das tarefas de
manutenção preventiva programadas, contemplou-se, nos cronogramas elaborados um indicador
de desempenho, denominado Preventive Maintenance Compliance. Através deste indicador foi
possível verificar que houve uma taxa de cumprimento, das tarefas de manutenção preventiva, de
98% no ano de 2021 e de 85% no ano de 2022. No que concerne às tarefas de lubrificação, a taxa
de cumprimento foi de 86% no ano de 2022, não sendo possível estabelecer uma análise
comparativa com o ano anterior, uma vez que apenas se encontram disponíveis dados do último
mês do ano anterior.
Due to the growing demand for energy in current global scenario, and in order to minimize environmental impact, the production of energy from renewable sources plays an important role in the diversification of energy sources, as it aims to reduce dependence on fossil fuels. This work was carried out at Siaf Energia, a cogeneration plant that uses biomass as its fuel source. This installation represents a sustainable approach, harnessing organic resources to produce electrical and thermal energy. The main aim of this project was to facilitate the maintenance management of the plant, in order to maximize the plant's operational availability, i.e. to prevent unscheduled outages and associated costs by drawing up a preventive maintenance plan. The methodology adopted was Action Research, which contributed to collaboration and involvement between the different hierarchies, as well as allowing for a flexible approach geared towards practical results. This process resulted in a file that provides a checklist of recurring preventive maintenance interventions for the various pieces of equipment, for the timeframe desired by maintenance management, as well as a timetable for planning preventive maintenance tasks, with longer intervention periods throughout the year. Due to the increased importance of lubrication in the installation in question, this work also resulted in a file that provides a checklist of preventive lubrication maintenance interventions and their specifics for the desired timeframe, as well as a schedule for planning and distributing them throughout the year. Since safety, as well as reducing costs and unproductive time, is a requirement for efficient maintenance, the conditions for identifying and accessing lubrication points were improved. To this end, labels with the relevant information were created and applied to all the lubrication points, and the location of the points whose accessibility was deemed inadequate was changed. In order to the maintenance management to assess and monitor the rate of fulfilment of scheduled preventive maintenance tasks, a key performance indicator called Preventive Maintenance Compliance was included in the schedules drawn up. This indicator showed that there was a compliance rate for preventive maintenance tasks of 98 per cent in 2021 and 85 per cent in 2022. With regard to lubrication tasks, the compliance rate was 86% in 2022, but it is not possible to establish a comparative analysis with the previous year, as data is only available for the last month of the previous year.
Due to the growing demand for energy in current global scenario, and in order to minimize environmental impact, the production of energy from renewable sources plays an important role in the diversification of energy sources, as it aims to reduce dependence on fossil fuels. This work was carried out at Siaf Energia, a cogeneration plant that uses biomass as its fuel source. This installation represents a sustainable approach, harnessing organic resources to produce electrical and thermal energy. The main aim of this project was to facilitate the maintenance management of the plant, in order to maximize the plant's operational availability, i.e. to prevent unscheduled outages and associated costs by drawing up a preventive maintenance plan. The methodology adopted was Action Research, which contributed to collaboration and involvement between the different hierarchies, as well as allowing for a flexible approach geared towards practical results. This process resulted in a file that provides a checklist of recurring preventive maintenance interventions for the various pieces of equipment, for the timeframe desired by maintenance management, as well as a timetable for planning preventive maintenance tasks, with longer intervention periods throughout the year. Due to the increased importance of lubrication in the installation in question, this work also resulted in a file that provides a checklist of preventive lubrication maintenance interventions and their specifics for the desired timeframe, as well as a schedule for planning and distributing them throughout the year. Since safety, as well as reducing costs and unproductive time, is a requirement for efficient maintenance, the conditions for identifying and accessing lubrication points were improved. To this end, labels with the relevant information were created and applied to all the lubrication points, and the location of the points whose accessibility was deemed inadequate was changed. In order to the maintenance management to assess and monitor the rate of fulfilment of scheduled preventive maintenance tasks, a key performance indicator called Preventive Maintenance Compliance was included in the schedules drawn up. This indicator showed that there was a compliance rate for preventive maintenance tasks of 98 per cent in 2021 and 85 per cent in 2022. With regard to lubrication tasks, the compliance rate was 86% in 2022, but it is not possible to establish a comparative analysis with the previous year, as data is only available for the last month of the previous year.
Description
Keywords
Cogeneration Biomass Maintenance Preventive Maintenance Plan Key Performance Indicators