| Summary: | 碩士 === 中原大學 === 工業與系統工程研究所 === 105 === Company''s outsourcing projects have frequently ended up with unexpected additional projects. The change of designs results in extra cost by 2-3% of the total cost, leading to be still acceptable for project managers. However, if the extra cost is more than by 30-50% of the total cost, the project managers would not do a great job on outsourcing projects.Due to the project due date, all of the relevant units of the case company shall comply with the targeted requirements within the time frame. The procurement procedures and methods shall also be reviewed within the time frame for the completion of the entire operations and the construction tasks.
This study used six sigma to analyze a procurement outsourcing project with extra engineering modifications for the case company.After the analysis was conducted, the result showed that the main reason was that there lacked of communications between the requested unit and the execution unit.Therefore, the case company modified the procurement process and enforced the initial procurement control operation in order to avoid an additional change of designs, leading to the extra cost. For the project budget, this study recommended that the procurement staff should adopt the quantitative methods to perform a cost analysis based on the suppliers’ price. After the improved process was implemented, this study showed that the modified procurement process could reduce the frequency of the substantial cost incurred by the change of designs.
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