Browsing by Author "Casais, R.B."
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- Continuous improvement in maintenance: a case study in the automotive industry involving Lean toolsPublication . Pinto, Gustavo Filipe; Silva, F.J.G.; Campilho, R.D.S.G.; Casais, R.B.; Fernandes, A.J.; Baptista, AndresaMaintenance function assumes a key role in today’s industry. The automotive industry is not an exception and there are strict rules to comply with. Indeed, the IATF 16949:2016 imposes the implementation of key performance indicator as a mean to control the overall manufacturing performance. This work presents a case study carried out in a multinational company related with the production of parts for the automotive industry where it was necessary to implement key performance indicators to comply with the IATF 16949: 2016 standard and a model was also created for the management of spare parts linked to the maintenance of existing equipment. The introduction of these changes forced the application of some Lean tools, with a view to improving procedures and information flows. The work was completed successfully, and key performance indicators were implemented, whose support data, which is now collected and calculated automatically on a routine basis, and the spare-parts management was validated with a view to optimization of warehouse space and at a conveniently low inventory level in this type of parts, without endangering critical equipment in production. The SMED methodology was applied, which allowed the setup time to be reduced by 11%, and the Lean 5S tool was used to organize the mould exchange activities. An OEE of more than 90% has been achieved.
- KPI development and obsolescence management in industrial maintenancePublication . Ferreira, S.; Silva, F.J.G.; Casais, R.B.; Pereira, Maria Teresa; Ferreira, Luís PintoSince the industrialization of the mid-19th century, the role of maintenance has become increasingly important as time moved on. Proactive maintenance has gained a crucial role, even though a lot of organizations still view it as an expense and not an investment. This paper highlights the role of KPIs and obsolescence management in maintenance operations. The first step was to create a new KPI to assess the work done in maintenance, relating it to the work done in production. Although the ISO 15341:2007 maps out certain KPIs, the creation of a new one was necessary. The result was a two phases KPI, in which its values are matched to a decision matrix that gives a qualitative evaluation of the performed work. The second step was to create a decision-making tool to evaluate the obsolescence of electronic components and choose the mitigation approach. The IEC 62402:2007 shows some terminology and some conditions to check for obsolescence, but does not point out whether a proactive or a reactive approach should be used. Like the KPI developed, it is also composed of a two-phase process. The first phase helps to see which components are at a higher risk to become obsolescent, while the second phase evaluates the repercussions to mitigate its obsolescence. The values obtained are also connected to a decision matrix to decide whether the approach for its mitigation should be proactive or reactive. The novel KPI and obsolescence approach were successfully tested in practice in a dairy processing factory, showing perfectly fulfil the goals initially set.