Redução da instabilidade e melhoria de desempenho do sistema MRP
MRP system: nervousness reduction and performance improvement
Godinho Filho, Moacir; Fernandes, Flavio Cesar F.
http://dx.doi.org/10.1590/S0103-65132006000100006
Prod, vol.16, n1, p.64-79, 2006
Resumo
O artigo propõe um método para melhorar o desempenho do sistema MRP em um estudo de caso, uma grande empresa que produz materiais para escrita. O método é conseqüência de um levantamento bibliográfico e de características particulares do estudo de caso. Este método parte do princípio de que a melhoria de desempenho dos sistemas MRP é viabilizada pela redução no grau de instabilidade de tais sistemas e esta por sua vez só pode ser conseguida por meio de dois fatores-chave: i) uma correta parametrização do sistema e ii) um planejamento e programação da produção integrados voltados para a elaboração de um Plano Mestre de Produção (MPS) factível, respeitando as limitações de cálculo de capacidade do sistema. O método foi implementado e os resultados foram: uma redução drástica na instabilidade do sistema, com conseqüente redução nos custos dos estoques, melhoria no nível de serviço e aumento da satisfação e confiança das pessoas com relação ao sistema.
Palavras-chave
Sistema MRP, redução da instabilidade, melhoria de desempenho, estudo de caso
Abstract
The paper presents a method designed to get an improvement of the system performance in a case study, a large company that produces materials for writing. The method arises from a literature survey and from the particular characteristics of the case study. The method argues that the improvement on MRP performance is attained by system nervousness reduction which is supported by two main factors: i) system parameters must be determined in a precise way; ii) integrated production planning and scheduling focused on development of a realistic Master Production Schedule (MPS), which takes account the system capacity. The method was applied and the results were: reduction of system nervousness, reduction of inventory costs, improvement of service level, increase of the workers satisfaction and increase the reliance on the MRP system.
Keywords
MRP system, system nervousness reduction, performance improvement, case study
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