| Abstract: | The aim this thesis is to investigate the current state of the maintenance in the coca cola company Addis
Ababa plant line three and to identify process bottlenecks. After recognizing the process bottleneck equipment,
situation is analyzed thoroughly by using root cause analysis. Based on the root cause analysis, improvement
activities was performed and measured. Current state analysis was conducted from production downtime and
spoilage data available. Final implications was measured by using overall equipment effectiveness as indicator.
Therefore, theoretical section was focusing on maintenance in manufacturing environment and connected to
company’s business. Moreover, background theory discussed the total productive maintenance and process
improvement. The empirical section was qualitative and quantitative research based on implementation of chosen
method. The current case company maintenance state was measured before the implementation, the measured
data indicate that OEE is slightly low below target, and defect product which hold for inspection is high above
target average by 7% .similarly maintenance situation was measured two months after the new method or tag
system implemented.so the measured data indicate that OEE increased above target by 2.16% which directly
increase machine availability, increase production time and reduce defect product. The results of the study was
visualizing the implications after the maintenance method improvement. As a result of the tagging system
implementation, overall equipment effectiveness (OEE) improved significantly during the two month evaluation
period. Therefore, it could be summarized that when improving company’s maintenance method, it was actualize
as better production figures and business result. In addition, challenges related to the maintenance in the
company were also identified in communication between personnel. Implementation of the tagging system
increased the amount of communication related to maintenance activities. Tag review meeting practice was
established and held on regular basis which involves whole manufacturing competency as shared tags between
departments. |
