Production scheduling and sequencing in a semiconductor industry : a case study | |
| Author | Asawin Wongwiwat |
| Call Number | AIT Thesis no. ISE-98-41 |
| Subject(s) | Production scheduling Semiconductor industry |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Abstract | Scheduling is an important aspect of production planning in semiconductor industries because it effects the processing time. In the situation where there are high-mix and low volume customers' demands, production re-planning is often required. If these plans can be scheduled, processing time would be reduced resulting in productivity improvement. This thesis is written based on a semiconductor case study - Semiconductor Venture International Co., Ltd. As there is no planning tool in the case study, a planner might spend too much time planning and human error might also occur. The objectives of this study are, therefore, to develop a plaiming tool and to find the most suitable method in job scheduling and sequencing for the factory. The data is collected from the case-study factory. All machines in the factory are classified into 3 cases based on three criteria: department, production process, and type of machine. For each case, four methods of Giffer and Thomson algorithm are used for the scheduling test: MWKR, SPT, L WKR, and RANDOM. The results are then compared by considering overdue proportions and mean flow time of each case and each method. The software is developed to use as a plaiming tool and the result shows that the most suitable method for job scheduling is SPT method if the machines are classified based on the production process. |
| Year | 1998 |
| Type | Thesis |
| School | School of Advanced Technologies |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Industrial Systems Engineering (ISE) |
| Chairperson(s) | Hasin, M.A.A.;Bohez, Erik L.J.; |
| Examination Committee(s) | Anulark Pinnoi ; |
| Scholarship Donor(s) | B.K.K. (1985) Co., Ltd.; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |