The application of lean-six-sigma methodology in the manufacturing sector
| dc.contributor.author | Olanrewaju, Folorunso Sulaimon | |
| dc.date.accessioned | 2025-04-15T12:22:29Z | |
| dc.date.available | 2025-04-15T12:22:29Z | |
| dc.date.issued | 2018-06 | |
| dc.description | A Master's thesis in Industrial Engineering | |
| dc.description.abstract | This research on application of lean six sigma methodology in the manufacturing company was carried out in the Nigerian Breweries at Enugu. Nigerian Breweries was selected for the study because it has many production lines, operating systems and management strategies which were not properly developed. The main objective of this study was to determine how application of lean six sigma can be used to minimize product and time wastes. Three production lines (line A, B and C) were considered and data were collected from each production line. The data obtained were analyzed using statistical tools. The result obtained from the analysis showed that the two (2) defects on the labelling in line A occurred at the beginning of the batch production. In line B the corking machine produced some bottles without cork. The extraction forces in Line A and B were well centered between the limits 20 and 40N while line C shifted to the left with more samples under lower specification limit of 20N. The result obtained showed the relationship between the oxygen and vacuum with respect to the pressure exerted on the cork. Capability analysis result showed that the corking machine in line B was working in a capable process with number of defects less than 0.13% which was much better than the one in line A. Line A had 0.17% of bottles rejected in the filling machine which showed that 0.028% were mistakes of the normal variability of the process. VSM analysis result showed that 32mins from the lead time were not value added activities, thus only 28.2% was value added time. Though the greater time was in the inventory before the washing machines. A reduction of 37.7% in value added time was achieved. The cause-effect diagram provided the main priorities to control and solve the problem of number of defects in each production line. The study recommended the adoption of the output of this work to other similar company. | |
| dc.identifier.citation | Olanrewaju, F. S. (2018). The application of lean-six-sigma methodology in the manufacturing sector (Unpublished Master's Thesis). Federal University of Technology, Owerri, Nigeria . | |
| dc.identifier.uri | https://repository.futo.edu.ng/handle/20.500.14562/1774 | |
| dc.language.iso | en | |
| dc.publisher | Federal University of Technology, Owerri | |
| dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | : Lean manufacturing | |
| dc.subject | Six sigma | |
| dc.subject | cause-effect | |
| dc.subject | capability | |
| dc.subject | value added | |
| dc.subject | Department of Mechanical Engineering | |
| dc.title | The application of lean-six-sigma methodology in the manufacturing sector | |
| dc.type | Master’s Thesis |