Importance Of Maintenance Strategies Evaluation

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3.4.4 Maintenance Strategies Evaluation It is important to determine the correct maintenance strategy for production equipment to reduce costs and increase efficiency. In some cases, production equipment requires a combination of maintenance strategies based on the consequences of failures and its modes. The advantages and functioning of different maintenance strategies are explained below: Corrective maintenance: This refers to the maintenance of equipment or replacement of components only when the equipment fails. The equipment is allowed to operate until breaks down. It is also called as reactive maintenance. This maintenance strategy can be viewed as a double-edged sword. Corrective maintenance can be considered for new equipment as …show more content…

The criticality of assets can be determined through historical repair data and the overall efficiency of the machines. The key performance indicators such as mean time between failure rates (MTBF) and mean time to repair (MTTR) will also help in the analysis. The criticality matrix is a suitable tool to evaluate, classify and prioritise an asset. This matrix also includes factors such as the cost of maintenance and costs related to lost production. After criticality analysis, the current maintenance strategy for top ranking assets is evaluated. The assets can be grouped together or individually evaluated. The criticality matrix results can be validated through different methods such as root cause analysis (RCA) or failure mode effect analysis (FMEA), which also provides qualitative analysis to assess reliability. These tools also help to determine the potential causes for failures or other factors which were not considered during criticality matrix …show more content…

It is a structured problem-solving methodology used in Six Sigma improvement projects. It uses many tools to effectively describe and improve the performance of a process. The main purpose of the Six Sigma DMAIC methodology is to improve the processes in a structured manner. In this approach, each phase builds on the previous steps to resolve the problems with unidentified answers. This methodology is mainly used while improving a current process, which has complex problems and high risks associated with it. The disciplined approach of DMAIC, following each and every step in an order, increases the chances of the project being successful. The decisions along the implementation are made based on concrete data. Even though it is an integral part of Six Sigma, it can also be implemented as a standalone quality improvement

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