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Aplicação da metodologia de análise de valor a mecanismos de barreira para aplicações ferroviárias
| Name: | Description: | Size: | Format: | |
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| 6.11 MB | Adobe PDF |
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Abstract(s)
Os mecanismos de barreiras aplicados no universo ferroviário existem desde há várias
décadas, tendo sempre tido como primeira preocupação a garantia da segurança
funcional da sua utilização. Para o conseguir, foram sempre recorrendo a técnicas e
tecnologias de grande maturidade à data do seu desenvolvimento. Como
consequência, estes equipamentos apresentaram sempre um custo relativamente alto,
quando comparados com outros semelhantes utilizados noutro tipo de aplicações, e
tiveram ciclos de vida mais longos. Este alongamento dos ciclos de vida faz, ainda hoje,
com que, no fim desses ciclos, os equipamentos apresentem problemas de
obsolescência dos seus componentes.
Este trabalho teve como base os mecanismos de meia barreira X Safe da EFACEC,
aplicados em passagens de nível em diversos locais, em Portugal e no estrangeiro.
Após uma análise dos componentes do mecanismo, processos de fabrico e falhas mais
comuns, procedeu-se a uma cuidada avaliação das soluções aplicadas pela
concorrência em sistemas equivalentes. O protótipo resultante deste trabalho
permitiu baixar o preço do equipamento, e mostrar um leque variado de opções que
podem passar a ser aplicadas, de modo a que o preço se mantenha reduzido e que
evitem falhas graves do sistema na sua aplicação no terreno.
Level crossing barriers mechanisms applied in the railway environment are in use for several decades, having always considered as first concern ensuring its functional safety. To achieve this, they have always been used techniques with great technology maturity regarding the time of the development. As a result, these devices have always presented a high cost and longer life cycles, when compared with similar devices used in other types of applications. This lengthening of life cycles is today, in the end of these cycles, presenting problems of its components due to equipment obsolescence. This work was based on the EFACEC X Safe half-barrier mechanism, applied at level crossings in several places, in Portugal and abroad. After an analysis of the mechanism components, manufacturing processes and most common failure events, a careful evaluation of the solutions applied by the competitors in similar systems was carried out. The prototype resulting from this work allowed lowering the price of the equipment, and to demonstrate a varied range of options those can be applied in order to keep the price low and avoid serious failures of the system on the ground.
Level crossing barriers mechanisms applied in the railway environment are in use for several decades, having always considered as first concern ensuring its functional safety. To achieve this, they have always been used techniques with great technology maturity regarding the time of the development. As a result, these devices have always presented a high cost and longer life cycles, when compared with similar devices used in other types of applications. This lengthening of life cycles is today, in the end of these cycles, presenting problems of its components due to equipment obsolescence. This work was based on the EFACEC X Safe half-barrier mechanism, applied at level crossings in several places, in Portugal and abroad. After an analysis of the mechanism components, manufacturing processes and most common failure events, a careful evaluation of the solutions applied by the competitors in similar systems was carried out. The prototype resulting from this work allowed lowering the price of the equipment, and to demonstrate a varied range of options those can be applied in order to keep the price low and avoid serious failures of the system on the ground.
Description
Keywords
Ferrovia Passagens de nível Análise de valor Engenharia de valor Análise FMEA Railway Level crossing barriers Value Analysis Value Engineering FMEA