Gestão & Produção
Gestão & Produção
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Economic feasibility analysis for insourcing hydraulic maintenance services using the Monte Carlo method

Análise de viabilidade econômica para a primarização de serviços de manutenção hidráulica pelo método de Monte Carlo

Nuno Miguel de Matos Torre; Nilson Brandalise; Andrei Bonamigo

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Abstract: Maintenance plays an indispensable role in the productive sector of an organization. The increasing use of high-precision operations in the steel industry means that hydraulic systems demand greater attention. This study proposes an evaluation framework for analyzing the economic feasibility of insourcing hydraulic maintenance services, seeking to present tools for assisting managers in decision-making and optimizing maintenance strategies. This paper presents a cash flow study, where the Net Present Value (NPV), the Internal Rate of Return (IRR), and the Profitability Index (PI) are calculated. Subsequently, the Monte Carlo method is applied to perform a sensitivity analysis for viewing the probabilities and output results. The main contribution of this study is to enable the evaluation of the results considering the economic feasibility of insourcing or outsourcing maintenance contracts through the proposed framework. In this case, the economic viability of insourcing presents a cost reduction in maintenance services. This approach suggested an industrial case study, where the use of the Monte Carlo and cash flow methods are useful tools for decision-making, contributing to the optimization of resources among industrial managers.


Maintenance, Hydraulic systems, Insourcing, Monte Carlo


Resumo: A manutenção representa um papel indispensável no sector produtivo de uma organização. A crescente utilização de funções operacionais com alto nível de precisão na indústria siderúrgica, faz dos sistemas hidráulicos um dos itens que requer um maior índice de atenção. O objetivo deste estudo é efetuar uma análise de viabilidade económica para primarização de serviços de manutenção hidráulica, se tornando uma ferramenta para auxiliar os gestores na tomada de decisões, almejando otimizar as estratégias de manutenção. Este artigo apresenta um estudo de fluxo de caixa, onde é calculado o Valor Presente Líquido (VPL), a Taxa Interna de Retorno (TIR) e o Índice de Lucratividade (PI). Posteriormente utiliza-se o método de Monte Carlo para efetuar uma análise de sensibilidade, permitindo assim visualizar as probabilidades e resultados de saída. A principal contribuição deste estudo se dá pela utilização do framework proposto, o qual permite uma visualização da análise dos resultados, considerando a viabilidade económica para primarização ou terceirização dos contratos de manutenção. Neste caso, a viabilidade econômica de primarização apresenta uma redução de custos nos serviços de manutenção. Esta abordagem propôs um estudo de um caso industrial, onde a utilização dos métodos de Monte Carlo e do fluxo de caixa se tornam ferramentas úteis para a tomada de decisão, contribuindo assim para a optimização dos recursos por parte dos gestores industriais.


Manutenção, Sistemas hidráulicos, Primarização, Monte Carlo


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