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Publication
Life cycle analysis : a global approach
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 3.23 MB | Adobe PDF |
Abstract(s)
A engenharia e gestão de ativos tem-se revelado cada vez mais decisiva para a
eficiência de qualquer organização, bem como para o aumento da fiabilidade dos
próprios ativos físicos.
A verdade é que este tipo de abordagem não permite apenas encarar um ativo de
forma individual e detalhada durante todo o seu ciclo de vida. Permite também
encarar de um ponto de vista abrangente, não só considerando o tempo de vida do
ativo, mas também todo o histórico da sua tipologia, tal como permite o estudo de
continuidade após a sua substituição.
Foram realizados dois estudos de caso em que se aplicaram os modelos de Ciclo de
Vida Útil e Económica a duas situações distintas: aos ativos de um parque infantil e
a ativos específicos de uma indústria pesada. Em ambos os casos, o objetivo foi
estimar o tempo ideal de substituição ou de renovação desses ativos.
O primeiro, trata-se de um problema em que os dados são muito escassos e em que
foi necessário recorrer a várias considerações iniciais arbitrárias. Este estudo
demonstrou parte da versatilidade dos modelos aplicados, bem como a sua enorme
mais-valia para a engenharia e gestão deste tipo de ativos.
Na sequência da apresentação deste caso de estudo no 17º Congresso Nacional de
Manutenção e 10º Encontro de Manutenção dos Países de Língua Portuguesa, a
atenção centrou-se na aplicação de Modelos de Ciclo de Vida ainda mais rigorosos,
mas desta vez na área da indústria pesada.
Em cooperação com uma empresa vocacionada para a produção de pasta de papel
(Celbi), foi possível obter alguns dados reais de funcionamento da linha de descasque
e corte de madeira instalada em meados de 2017.
Ao contrário do estudo do ciclo de vida dos parques infantis, foi possível recolher
dados reais sobre os custos de exploração. Além disso, trata-se de um ativo que
produz um retorno financeiro e, por conseguinte, a área de negócio é diferente.
Neste último caso, foram aplicados seis modelos de ciclo de vida - o modelo de Ciclo
de Vida Útil e cinco modelos de Ciclo de Vida Económica diferentes. Por este
motivo, foram consideradas novas variáveis e diferentes abordagens.
Asset engineering and management has increasingly shown itself to be crucial to any organisation's efficiency, as well as to increasing the reliability of the physical assets themselves. The truth is that this type of approach not only makes possible to look at an asset per si and in detail for all of their life cycles. It also makes it possible to look from a much broader viewpoint, not only considering the asset's lifetime, but also the entire history, as well as making it possible to study its continuity after it has been replaced. Two case studies were carried out in which Lifespan and Economic Replacement Models were applied to two very different situations: to the assets of a children's playground and specific assets of a heavy industry. In both cases, the aim was to estimate the ideal replacement or refurbishment time for those assets. The first one, is a problem with very poor data, where it was necessary to take several arbitrary initial considerations. This demonstrated part of the versatility of these models, together with their enormous added value for the engineering and management of these types of assets. Following the presentation of this case study at the 17th National Maintenance Congress and 10th Maintenance Meeting of Portuguese-speaking Countries, attention was focussed on the application of even more rigorous Life Cycle Models, but this time in the area of heavy industry. In cooperation with a company focussed on paper pulp production (Celbi), it was possible to obtain some real operating data for the Wood Debarking and Chipping Line installed in mid-2017. Unlike the study of the life cycle of playgrounds, it was possible to collect real data on exploitation costs. Furthermore, it is an asset that produces a financial return and therefore the business environment is different. In the latter case, six life cycle models were applied - the Lifespan and five different Economic models. For this reason, new variables and different approaches were considered.
Asset engineering and management has increasingly shown itself to be crucial to any organisation's efficiency, as well as to increasing the reliability of the physical assets themselves. The truth is that this type of approach not only makes possible to look at an asset per si and in detail for all of their life cycles. It also makes it possible to look from a much broader viewpoint, not only considering the asset's lifetime, but also the entire history, as well as making it possible to study its continuity after it has been replaced. Two case studies were carried out in which Lifespan and Economic Replacement Models were applied to two very different situations: to the assets of a children's playground and specific assets of a heavy industry. In both cases, the aim was to estimate the ideal replacement or refurbishment time for those assets. The first one, is a problem with very poor data, where it was necessary to take several arbitrary initial considerations. This demonstrated part of the versatility of these models, together with their enormous added value for the engineering and management of these types of assets. Following the presentation of this case study at the 17th National Maintenance Congress and 10th Maintenance Meeting of Portuguese-speaking Countries, attention was focussed on the application of even more rigorous Life Cycle Models, but this time in the area of heavy industry. In cooperation with a company focussed on paper pulp production (Celbi), it was possible to obtain some real operating data for the Wood Debarking and Chipping Line installed in mid-2017. Unlike the study of the life cycle of playgrounds, it was possible to collect real data on exploitation costs. Furthermore, it is an asset that produces a financial return and therefore the business environment is different. In the latter case, six life cycle models were applied - the Lifespan and five different Economic models. For this reason, new variables and different approaches were considered.
Description
Keywords
Análise do ciclo de vida Modelos de ciclo de vida Ativos físicos Parques infantis Ativos da indústria pesada